SANTA MONICA -- Students and staff returned to Santa Monica College on Monday to finish their final exams and mourn the victim's of Friday's shooting rampage, all while wondering why and how such a tragedy could have occurred.

"I loved her very much and she left me," Luisa Gomez said tearfully in Spanish. "It's like she was here a minute ago and now she's gone. We were so very close. We spoke every day on the telephone."

Her 67-year-old sister had worked in a ceramics factory for about 20 years and retired with a small pension, Gomez said. She would collect bottles and cans for recycling twice a week to help pay her bills and was well-known on campus. She had lived in Santa Monica for about 26 years.

The shooting spree on Friday claimed five lives, plus the gunman, in addition to several injuries and damage to property.

Police identified former SMC student John Zawahri, 23, as the black-clad killer who went on a milelong shooting spree before noon that ended with him being gunned down by officers during a shootout inside the campus library. His victims included his father, Samir, 55, and brother Christopher, 24, who were shot before Samir's house was set on fire. He then shot three people at random as he made his way through the city in a carjacked vehicle.

At the college, he blasted a Ford Explorer driven by Carlos Navarro Franco, 68, a longtime SMC groundskeeper, killing him. He also shot Franco's 26-year-old daughter, Marcela, who had accompanied him to buy textbooks for summer classes. She died Sunday.

As he made his way onto campus, he shot Gomez near the school library before dying in a gunfight with officers inside the building.

Police later found that Zawahri's duffel bag packed a vintage revolver and enough magazines to hold 1,300 rounds of ammunition. The whole spree of violence lasted all of about 13 minutes.

"Again, we want to express our condolences to victims of this horrific crime," said Chief Albert Vasquez of the Santa Monica College Police Department, during a Monday news conference.

He said more than 100 students had seen school counselors. Police security was beefed up on campus.

In the past six weeks, the campus of up to 40,000 students had been traumatized by a bomb scare, suicide and off-campus threats, Vasquez said.

Students called for greater security and strict protocols for emergency response.

Theater arts major Sarge Hall, a 38-year-old Army veteran of Bosnia and Afghanistan, tried to recite lines of two plays for his final exam on

Monday. But all he could think about was mayhem and murder.

"When something like this happens, it breaks our flow, disturbs our spirit and peace of mind," said Hall of Santa Monica. "(And) guess what? It ain't done. They ignore all the bomb threats. People have PTSD. We don't know what to think out here. As a combat veteran, all the warning signs are here."

At Zawahri's burned-out house, firefighters continued to assess the damage Monday, while a shrine to Chris Zawahri appeared on the front lawn. "R.I.P. Chris," it said, fronted by 21 votive candles. "Ima miss you bro," said one refrain. "I friggin miss your smile," said another.

"Why would somebody do this?" asked 16-year-old Fernando Vallarta, who lived a couple of blocks away, repeating the question on most people's minds. "It's crazy. Santa Monica is a pretty calm community. Now we have this."

Police said the Lebanese native had a run-in with the law in 2006, when he was a juvenile. Others said he had been upset about his parent's divorce before launching a murder spree that began with domestic violence.

A few miles away, in Los Angeles, was a small gray-and-white apartment complex dubbed "Western Pride," where his older brother and his mother, Randa Abdou, lived. Abdou was out of the country when the shootings occurred, police said, but she is believed to have returned since then. No one answered at her door on Monday.

The woman who was carjacked by Zawahri described her ordeal Monday in an interview with Anderson Cooper on CNN.

Laura Sisk said she was driving to her nephew's play at a school in Los Angeles when the gunman, dressed in tactical gear, appeared on the street, pointed what looked like a machine gun at her and demanded she pull over. She said at first she thought he was perhaps part of the security detail for President Obama, who was in town for a fundraiser. That impression soon changed as he ordered her around and began shooting his weapon -- later identified as a .223 caliber assault rifle -- at random targets on the street.

He had her put his bag full of ammunition into her back seat on top of a child seat, then forced her to drive through Santa Monica, stopping at least twice to shoot randomly at cars and a city bus along the way.

"Somewhere along the ride, he said this is what's going to happen: 'You're going to drive me to Santa Monica College'," she recalled. "I thought perhaps that was where Obama was. I didn't know. 'You're going to drive me there, you're going to pull over and get out and put my bag on the ground and let me go.' I kept saying don't hurt me, I have children, don't hurt me. Thank God I didn't have a child in the back seat. He shot where a child would've been sitting."

He let her go at the college. She said she drove through the campus trying to warn people about the gunman and called 9-1-1. Later police had her show them where it all started and go through the route.

Hundreds of people attended the somber vigil at the college's Corsair Stadium amid a heavy police presence.

"We're gathered here today to mourn together the senseless loss of life," said Jonathan Mooney, a speaker at the event who works with a community program in Santa Monica that helps young people find jobs. "But also to celebrate lives well-lived. We are here together to remember what we stand for as a community. We're a city where neighbors wave to each other on the street. Our goal needs to be to stand together as a community." ___

Earlier on HuffPost:

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  • WARNING: Graphic photos of the Santa Monica shooting investigation ahead.

  • Police Release Evidence Photos: June 13

    An evidence photo showing a Colt pistol is among several new evidence photos of the June 9 shooting rampage by John Zawahri that were released by the Santa Monica, Calif., Police Department at a news conference Thursday, June 13, 2013. (AP Photo/Reed Saxon)

  • Police Release Evidence Photos: June 13

    An evidence photo showing a Colt 45 is among several new evidence photos of the June 9 shooting rampage by John Zawahri that were released by the Santa Monica, Calif., Police Department at a news conference Thursday, June 13, 2013. (AP Photo/Santa Monica Police)

  • Police Release Evidence Photos: June 13

    An evidence photo showing weapons, cartridges and magazines is among several new evidence photos of the June 9 shooting rampage by John Zawahri that were released by the Santa Monica, Calif., Police Department at a news conference Thursday, June 13, 2013. (AP Photo/Santa Monica Police)

  • Police Release Evidence Photos: June 13

    An evidence photo showing a bag and cartridge magazines is among several new evidence photos of the June 9 shooting rampage by John Zawahri that were released by the Santa Monica, Calif., Police Department at a news conference, Thursday, June 13, 2013. (AP Photo/Santa Monica Police)

  • Police Release Evidence Photos: June 13

    An evidence photo showing a ballistic vest is among several new evidence photos of the June 9 shooting rampage by John Zawahri that were released by the Santa Monica, Calif., Police Department at a news conference Thursday, Thursday, June 13, 2013. (AP Photo/Santa Monica Police)

  • Police Release Evidence Photos: June 13

    An evidence photo showing a duffle bag with ammunition is among several new evidence photos of the June 9 shooting rampage by John Zawahri that were released by the Santa Monica, Calif., Police Department at a news conference Thursday, Thursday, June 13, 2013. (AP Photo/Santa Monica Police)

  • Police Release Evidence Photos: June 13

    This untitled evidence photo is among several new evidence photos of the June 9 shooting rampage by John Zawahri that were released by the Santa Monica, Calif., Police Department at a news conference Thursday, Thursday, June 13, 2013. (AP Photo/Santa Monica Police)

  • Police Release Evidence Photos: June 13

    An evidence photo showing the body of John Zawahri where he fell on the Santa Monica College campus is among several new evidence photos of the June 9 shooting rampage by Zawahri that were released by the Santa Monica, Calif., Police Department at a news conference Thursday, June 13, 2013. (AP Photo/Reed Saxon)

  • Police Release Evidence Photos: June 13

    An evidence photo showing the SUV in which Carlos Franco and his daughter Marcela Franco were shot and killed is among several new evidence photos of the June 9 shooting rampage by John Zawahri that were released by the Santa Monica, Calif., Police Department at a news conference Thursday, June 13, 2013. (AP Photo/Santa Monica Police)

  • Police Release Evidence Photos: June 13

    Police Chief Jacqueline Seabrooks of the Santa Monica, Calif., Police Department speaks at a news conference Thursday, June 13, 2013, at which additional evidence photos of the June 9 shooting rampage by John Zawahri were released. (AP Photo/Reed Saxon)

  • Police Release Photo Of Gunman: June 9

    This undated photo provided on Sunday, June 9, 2013, by the Santa Monica Police Department shows John Zawahri, 23, who police have identified as the shooter in Friday's deadly rampage at Santa Monica College. The suspect was shot and killed by authorities Friday after a violent spree that claimed the lives of five people and wounded several others. (AP Photo/Santa Monica Police Department)

  • Makeshift Memorial At Santa Monica College: June 9

    Messages and flowers are placed at a makeshift memorial in Santa Monica College campus Sunday, June 9, 2013 in Santa Monica, Calif. A shooting on Friday rampage in Santa Monica that left six people dead, including the suspected gunman. (AP Photo/Ringo H.W. Chiu) (AP Photo/Ringo H.W. Chiu)

  • Makeshift Memorials At Santa Monica College: June 9

    Nate Edelson, 39, a former student of Santa Monica College, dressed as a Fairly Angel, pets his dog Bull after putting heart-covered messages at a makeshift memorial at Santa Monica College Sunday, June 9, 2013, in Santa Monica, Calif. A shooting rampage that resulted in six deaths ended at the campus on Friday. (AP Photo/Ringo H.W. Chiu)

  • Woman Who Put Herself Between Gunman & Victim Speaks: June 9

    Debra and Russell Fine pose for a photo Sunday, June 9, 2013 in Santa Monica, Calif. Debra Fine, who was wounded Friday when shooting suspect John Zawahri went on a deadly rampage in Santa Monica, was released in good condition late Saturday from Ronald Reagan UCLA Medical Center, according to a hospital statement. Bullets missed his wife’s vital organs by inches, Russell Fine told the AP Sunday. (AP Photo/Tami Abdollah)

  • Victims' Family Releases Photo: June 9

    This undated photo provided by the family shows, from left, Carlos Navarro Franco, Marcela Franco, Ramona Franco and Letecia Franco. Marcela Franco died Sunday, June 9, 2013, after Friday's deadly rampage in Santa Monica, Calif. Marcela Franco had been a passenger in a Ford Explorer driven by her father, campus groundskeeper Carlos Navarro Franco who also was killed in Friday's attack. (AP Photo/Family Photo)

  • Victims' Family Members Speak To Press: June 9

    Margaret Quinonez-Perez, left, speaks to reporters during a news conference, Sunday, June 9, 2013, about victims Marcela Franco and father Carlos Navarro Franco who were both killed in Friday's deadly rampage shooting in Santa Monica, Calif. Letecia Franco, sister and daughter of the victims, second from right, cries with Ryan Payne, boyfriend of Marcela, as Sandra Franco, cousin to Marcela, stands at right. At upper right is one of Marcela's friends, Giovanni Gonzalez. Marcela Franco had been a passenger in a Ford Explorer driven by her father, campus groundskeeper Carlos Navarro Franco, when they were shot in the attack. (AP Photo/Mark J. Terrill)

  • Gunman's Image Revealed At Press Conference: June 8

    A picture of the suspect entering Santa Monica College Library is seen as Jacqueline Seabrook, Chief of Santa Monica Police department speaks during a news conference Saturday June 8, 2013, in Santa Monica, Calif., to discuss more information regarding the suspect in the shooting that left five people dead, including the shooter, near Santa Monica College on Friday. (AP Photo/Ringo H.W. Chiu)

  • Gunman's Image Revealed At Press Conference: June 8

    This photo provided by the Santa Monica Police Department shows the suspect entering Santa Monica College Library carrying a weapon, Friday, June 7, 2013 in Santa Monica, Calif., The gunman who went on a chaotic rampage killing four people before being fatally shot by police at a college campus planned the attack and was capable of firing 1,300 rounds of ammunition, the police chief said Saturday. (AP Photo/Santa Monica Police Department)

  • Gunman's Arsenal Revealed At Press Conference: June 8

    Weapons and other evidence recovered from the gunman in Friday's deadly shooting rampage that left four people dead, in Santa Monica, Calif are displayed Saturday June 8, 2013, in Santa Monica. (AP Photo/Tami Abdollah)

  • Gunman's Arsenal Revealed At Press Conference: June 8

    Weapons recovered from Santa Monica College are displayed during a news conference held by Santa Monica Police, Saturday June 8, 2013, in Santa Monica, Calif. Santa Monica Police Chief Jacqueline Seabrooks says the gunman who killed four people in a chaotic rampage planned the attack and had 1,300 rounds of ammunition. (AP Photo/Ringo H.W. Chiu)

  • Resident Near Burned Home Talks About Neighbors: June 8

    Beverly Meadows talks about her neighbors in her Santa Monica, Calif., home Saturday, June 8, 2013, including a man who is thought to be the shooter in a deadly rampage Friday that left four people dead in the neighborhood. The gunman killed his father and brother at their home and another man at nearby Santa Monica College, authorities said. He would kill a woman outside the school library moments later, before dying from police gunfire. (AP Photo/Tami Abdollah)

  • House Fire On Yorkshire Avenue: June 7

    Firefighters work on a home that burned near Santa Monica College in Santa Monica, Calif., Friday, June 7, 2013. Two people were found dead in the house near the college campus, where someone sprayed a street corner with gunfire, wounding at least three people, authorities said. (AP Photo/Reed Saxon)

  • House Fire On Yorkshire Avenue: June 7

    Firefighters work at a burning home about a mile northeast of Santa Monica College in Santa Monica, Calif. Friday, June 7, 2013. Two people were found dead in the burned home where someone sprayed a street corner with gunfire, wounding at least three people, authorities said. (AP Photo/Reed Saxon)

  • Carjacking In Santa Monica: June 7

    A car with its windows broken stands near where shots were fired near Santa Monica College in Santa Monica, Calif., Friday, June 7, 2013. Two people were found dead in a burned home near the college campus, where someone sprayed a street corner with gunfire, wounding at least three people, authorities said.(AP Photo/Reed Saxon)

  • Carjacking In Santa Monica: June 7

    An investigator checks a car damaged by a bullet at the intersection of Kansas and Yorkshire about a mile northeast of Santa Monica College in Santa Monica, Calif. on Friday, June 7, 2013. (AP Photo/Reed Saxon)

  • Santa Monica Bus Shot: June 7

    Investigators look at a Santa Monica City Bus that was shot at in Santa Monica, Calif. Friday, June 7, 2013. Someone fired gunshots near the campus of Santa Monica College shortly before noon Friday, police said, and several people were reported to be wounded. (AP Photo/Damian Dovarganes)

  • Santa Monica College Evacuated: June 7

    A Santa Monica police officer leads children on a field trip from Citizens of the World Charter School in Los Angeles out of Santa Monica College, where they had gone for a planetarium show, following a shooting in the area, in Santa Monica, Calif., Friday, June 7, 2013. Two people were found dead Friday in a burned home near the campus, where someone sprayed a street corner with gunfire. (AP Photo/Reed Saxon)

  • Santa Monica College Evacuated: June 7

    A Santa Monica police officer leads children from Citizens of the World School in Los Angeles out of Santa Monica College, who were there for a planetarium show, as the campus is systematically cleared, in Santa Monica, Calif., Friday, June 7, 2013. Authorities say a gunman carrying an assault-style rifle killed at least six people in Santa Monica before police killed him during a gunfight in the Santa Monica College library. (AP Photo/Reed Saxon)

  • Santa Monica College Evacuated: June 7

    SANTA MONICA, CA - JUNE 07: Students rush to safety after shots were fired near the Santa Monica College on June 7, 2013 in Santa Monica, California. (Photo by Kevork Djansezian/Getty Images)

  • Santa Monica College Evacuated: June 7

    SANTA MONICA, CA - JUNE 07: Students rush to safety after shots were fired near the Santa Monica College on June 7, 2013 in Santa Monica, California. (Photo by Kevork Djansezian/Getty Images)

  • Santa Monica College Evacuated: June 7

    SANTA MONICA, CA - JUNE 07: Los Angeles Police Department officers along with Los Angeles County SWAT team members search the grounds of Santa Monica College near the library after multiple shootings were reported on the campus June 7, 2013 in Santa Monica, California. (Photo by Kevork Djansezian/Getty Images)

  • Santa Monica College Evacuated: June 7

    SANTA MONICA, CA - JUNE 07: Los Angeles County SWAT team members search the grounds of Santa Monica College near the library after multiple shootings were reported on the campus June 7, 2013 in Santa Monica, California. (Photo by Kevork Djansezian/Getty Images)

  • Santa Monica College Evacuated: June 7

    SANTA MONICA, CA - JUNE 07: Los Angeles Police Department officers along with Los Angeles County SWAT team members search the grounds of Santa Monica College near the library after multiple shootings were reported on the campus June 7, 2013 in Santa Monica, California. (Photo by Kevork Djansezian/Getty Images)

  • Santa Monica College Evacuated: June 7

    SANTA MONICA, CA - JUNE 07: California Highway Patrol Officers contain a scene at Santa Monica College after multiple shootings were reported on the campus June 7, 2013 in Santa Monica, California. (Photo by Kevork Djansezian/Getty Images)

  • Santa Monica College Evacuated: June 7

    SANTA MONICA, CA - JUNE 07: Los Angeles County SWAT team members search the grounds of Santa Monica College near the library after multiple shootings were reported on the campus June 7, 2013 in Santa Monica, California. (Photo by Kevork Djansezian/Getty Images)

  • Santa Monica College Evacuated: June 7

    SANTA MONICA, CA - JUNE 07: Los Angeles County SWAT team members search the grounds of Santa Monica College near the library after multiple shootings were reported on the campus June 7, 2013 in Santa Monica, California. (Photo by Kevork Djansezian/Getty Images)

  • Santa Monica College Evacuated: June 7

    SANTA MONICA, CA - JUNE 07: Students look on as Los Angeles Police Department officers deploy around the grounds of Santa Monica College near the library after multiple shootings were reported on the campus June 7, 2013 in Santa Monica, California. (Photo by Kevork Djansezian/Getty Images)

  • Santa Monica College Evacuated: June 7

    SANTA MONICA, CA - JUNE 07: California Highway Patrol Officers contain a scene at Santa Monica College after multiple shootings were reported on the campus June 7, 2013 in Santa Monica, California. According to reports, at least one person has died, four people hospitalized, and a suspect was taken into custody. (Photo by Kevork Djansezian/Getty Images)

  • Santa Monica College Evacuated: June 7

    Police officers stand next to a body near an entrance to Santa Monica College, Friday, June 7, 2013, in Santa Monica, Calif., following a shooting incident in the area. Two people were found dead in a burned home near the college, where someone sprayed a street corner with gunfire, authorities said. (AP Photo/Tami Abdollah)

  • Santa Monica College Evacuated: June 7

    SANTA MONICA, CA - JUNE 07: Los Angeles Police Department officers search the grounds of Santa Monica College near the library after multiple shootings were reported on the campus June 7, 2013 in Santa Monica, California. (Photo by Kevork Djansezian/Getty Images)

  • Santa Monica College: June 7

    California Highway Patrol officers help police clear systematically the Santa Monica College campus in Santa Monica, Calif., Friday, June 7, 2013. Two people were found dead Friday in a burned home, apparent victims of a shooting rampage that killed another person and injured at least five others before a shooter was wounded at the nearby college, authorities said. (AP Photo/Reed Saxon)

  • Santa Monica College Evacuated: June 7

    Police stand outside the locked down Santa Monica College campus in Santa Monica, Calif. Friday, June 7, 2013. Two people were found dead Friday in a burned home near the school, where someone sprayed a street corner with gunfire, wounding at least three people, authorities said. (AP Photo/Damian Dovarganes)

  • Santa Monica College Evacuated: June 7

    Police officers guard side roads leading to the grounds of Santa Monica College after multiple shootings were reported on the campus June 7, 2013 in Santa Monica, California. (JOE KLAMAR/AFP/Getty Images)

  • Santa Monica College Evacuated: June 7

    A California Highway Patrol officer stands guard as students students wait outside the north side of the lock down Santa Monica College campus in Santa Monica, Calif. Friday, June 7, 2013. Two people were found dead Friday in a burned home near the school, where someone sprayed a street corner with gunfire, wounding at least three people, authorities said. (AP Photo/Damian Dovarganes)

  • Santa Monica College Evacuated: June 7

    A Santa Monica College student waits for police clearance to pick up her vehicle after a shooting on campus Friday June 7, 2013 in Santa Monica, Calif. A gunman with an assault-style rifle killed at least six people in Santa Monica on Friday before police shot him to death in a gunfight in the Santa Monica College library. (AP Photo/Nick Ut)

  • Santa Monica College Evacuated: June 7

    Santa Monica College students wait for police clearance to pick up their vehicles after a shooting on campus Friday June 7, 2013 in Santa Monica. A gunman with an assault-style rifle killed at least six people in Santa Monica on Friday before police shot him to death in a gunfight in the Santa Monica College library. (AP Photo/Nick Ut)

  • Santa Monica College Evacuated: June 7

    Students stand outside the north side of Santa Monica College campus in Santa Monica, Calif. Friday, June 7, 2013. Two people were found dead Friday in a burned home near college, where someone sprayed a street corner with gunfire, wounding at least three people, authorities said. (AP Photo/Damian Dovarganes)

  • Santa Monica College: June 7

    Tina Kronkvist, 21, top right, a student at Santa Monica College, ices her knee she injured running from shots fired by a gunman Friday June 7, 2013 in Santa Monica, Calif. Someone fired gunshots near the campus of Santa Monica College shortly before noon Friday, police said, and several people were reported to be wounded. (AP Photo/Tami Abdollah)

  • Santa Monica College Evacuated: June 7

    SANTA MONICA, CA - JUNE 07: Backpacks and lunch are left behind after students escaped multiple shooting on the campus of Santa Monica College near the library June 7, 2013 in Santa Monica, California. (Photo by Kevork Djansezian/Getty Images)

  • Santa Monica College Evacuated: June 7

    SANTA MONICA, CA - JUNE 07: Backpacks and lunch are left behind after students escaped multiple shooting on the campus of Santa Monica College near the library June 7, 2013 in Santa Monica, California. (Photo by Kevork Djansezian/Getty Images)