Police have identified Jacob Tyler Roberts as the gunman who fatally shot two people at a crowded Oregon mall Tuesday before killing himself minutes later.

There is no known connection between Roberts, 22, and the Clackamas Town Center, police said Wednesday. Authorities have yet to identify a motive for the shooting and said they are still piecing together the suspect's actions leading up to it.

"At this time we do not understand the motive of this attack except to say there is no apparent relationship between the suspect and his victims," Clackamas County Sheriff Craig Roberts said at a press conference.

According to the sheriff, investigators have executed a search of the suspect's home at 7324 South East 84th Ave. in Portland and his 1996 VW Jetta that was found in the mall parking lot.

Police said they are not ready to release what, if anything, they found during either search.

At least part of the deadly encounter that rattled shoppers was captured on video surveillance inside the mall.

The gunman announced, "I am the shooter," and then opened fire on unsuspecting Christmas shoppers, witnesses at the Clackamas Town Center, which is just outside Portland, told police after the shooting.

The shooter was wearing a white hockey mask, and a load-bearing vest. He was also carrying a semi-automatic AR-15 rifle and several fully loaded magazines. The rifle was stolen from a person known to the suspect, police said.

Witnesses told police the gunman fired several shots at about 3:30 p.m. Tuesday near the mall food court before his rifle jammed and he ran into a nearby Macy's store.

Bill Cameron, a resident of Portland who was doing some holiday shopping at the mall, was on his way to the exit when he heard the gunshots echo through the hall behind him.

"I don't know exactly how many [shots were fired] but it was quite a few -- at least half a dozen or more. It was fairly rapid and I remember thinking whatever it was had to be something that could fire quickly," Cameron told The Huffington Post.

Investigators estimate the gunman fired his weapon at least 20 times.

According to Lt. James Rhodes, of the Clackamas County Sheriff's Office, three people were killed, including the shooter. The shooter died of a self-inflicted gunshot, Rhodes said.

One person, described as a 15-year-old girl, suffered a traumatic injury and is in serious condition at a Portland hospital.

On Wednesday morning, Yevgeniy Shevchenko posted a message to Facebook identifying the victim as his sister, Kristina Shevchenko.

"[Kristina] was shot at the Clackamas mall today around 3:30 pm. as of now she is stable and sleeping," the message reads. "The bullet went through, bruising her lung; it missed any vital organs and it missed her ribs. She will need 2 more operations. We appreciate any and all support including your prayers!"

Contacted by The Huffington Post, Yevgeniy Shevchenko said the family will not be giving any interviews to the media. "We would like some privacy. We are going to do periodical updates on [Facebook] but nothing too personal," he said.

The shooting victims have been identified as Cindy Ann Yuille, 54, and Steven Forsyth, 45.

STATEMENT FROM THE FORSYTH FAMILY:

"Steven Mathew Forsyth was a loving husband, father of two children, son, brother, uncle, youth sports coach and friend to the many people who had the privilege to meet him.

"Steve was one of the most passionate people with a true entrepreneurial spirit that drove him to start his business, Coastoms. He had a great sense of humor and a zest for life. He had vision and a belief in others that brought great joy and value to many lives.

"He will be sorely missed by all who knew him.
_____

STATEMENT FROM THE YUILLE FAMILY:

"Cindy was everybody's friend. She was a wonderful person who was very caring and put others first.

The Yuille family said they will make another statement at an unspecified date through the sheriff's office.

The sheriff said he does not believe the gunman was targeting a specific individual and called it a random shooting.

The shooting came almost two months after a deadly massacre near Brookfield Square Mall in Brookfield, Wis. Three people died in the shooting and several others were wounded. The suspect, identified as 45-year-old Radcliffe Haughton, was found dead in the spa where the shooting took place of a self-inflicted gunshot wound.

The Clackamas Town Center is closed Wednesday while police continue to investigate the shooting. The mall has two levels and is anchored by Sears, Macy's, Nordstrom and JCPenney.

"Our thoughts and prayers are with everyone who was in the mall at the time of this unfortunate incident," the Clackamas Town Center posted to its Facebook page. "We are grateful to have the stellar support of all the law enforcement agencies and rescue personnel in the area, who immediately took action and continue to ensure the safety of everyone remaining on property."

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  • Jacob Tyler Roberts

    Jacob Tyler Roberts, 22, was identified by the Clackamas County Sheriff as the mall shooter who killed 2, and wounded 1 other, before turning the gun on himself.

  • Cindy Ann Yuille

    Cindy Ann Yuille, age 54, a resident of northeast Portland was one of the two victims killed in the Clackamas Town Center shooting. A statement made by her family following the shooting: "Cindy was everybody’s friend. She was a wonderful person who was very caring and put others first."

  • Steven Matthew Forsyth

    Steven Matthew Forsyth, age 45, of West Linn, was the second of the two victims killed in the Clackamas Town Center shooting. A statement made by her family following the shooting: "Steven Mathew Forsyth was a loving husband, father of two children, son, brother, uncle, youth sports coach and friend to the many people who had the privilege to meet him."

  • Jacob Tyler Roberts

    Jacob Tyler Roberts, 22, was identified by the Clackamas County Sheriff as the mall shooter who killed 2, and wounded 1 other, before turning the gun on himself.

  • Jacob Tyler Roberts

    Jacob Tyler Roberts, 22, was identified by the Clackamas County Sheriff as the mall shooter who killed 2, and wounded 1 other, before turning the gun on himself.

  • Jacob Tyler Roberts

    Jacob Tyler Roberts, 22, was identified by the Clackamas County Sheriff as the mall shooter who killed 2, and wounded 1 other, before turning the gun on himself.

  • Jacob Tyler Roberts

    Jacob Tyler Roberts, 22, was identified by the Clackamas County Sheriff as the mall shooter who killed 2, and wounded 1 other, before turning the gun on himself.

  • Jacob Tyler Roberts

    Jacob Tyler Roberts, 22, was identified by the Clackamas County Sheriff as the mall shooter who killed 2, and wounded 1 other, before turning the gun on himself.

  • At Least Two Dead, One Injured In Oregon Mall Shooting

    CLACKAMAS, OR - DECEMBER 11: Emergency vehicles gather outside the Clackamas Town Center mall after a shooting on December 11, 2012 in Clackamas, Oregon. According to reports, two victims and the gunman are dead after emergency dispatchers received reports that a shooting had occurred and a man was seen with an assault rifle near the mall's food court around 3:29 p.m. (Photo by Craig Mitchelldyer/Getty Images)

  • A couple removes police tape from their car after they were cleared to leave Clackamas Town Center in Portland, Ore., Tuesday, Dec. 11, 2012. Witnesses say the scene went from cheery to chaotic in seconds when a gunman opened fire in the suburban Portland shopping mall Tuesday, killing two people and wounding another. (AP Photo/The Oregonian, Thomas Boyd)

  • First responders stand outside where a gunman opened fire at the Clackamas Town Center shopping mall earlier in Portland, Ore., Tuesday, Dec. 11, 2012. Police say three people are dead, including the gunman. (AP Photo/Don Ryan)

  • Police Audio

    Clackamas Oregon Town Center mall shooting police scanner audio.

  • Media gather around Clackamas County sheriff's Lt. James Rhodes during a news conference at the scene of a multiple shooting at Clackamas Town Center Mall in Clackamas, Ore., Tuesday Dec. 11, 2012. A gunman is dead after opening fire in the Portland, Ore., area shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/Greg Wahl-Stephens)

  • Shoppers wait to be evacuated outside the scene of a multiple shooting at Clackamas Town Center Mall in Clackamas, Ore., Tuesday Dec. 11, 2012. A gunman is dead after opening fire in the Portland, Ore., area shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/Greg Wahl-Stephens)

  • James Rhodes

    Clackamas County sheriff's Lt. James Rhodes speaks to the media outside the scene of a multiple shooting at Clackamas Town Center Mall in Clackamas, Ore., Tuesday Dec. 11, 2012. A gunman is dead after opening fire in the Portland, Ore., area shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/Greg Wahl-Stephens)

  • An Oregon State police car leaves the parking lot where a gunman opened fire at the Clackamas Town Center shopping mall earlier in Portland, Ore., Tuesday, Dec. 11, 2012. Police say three people are dead, including the gunman. (AP Photo/Don Ryan)

  • A tactical team moves through the mall parking lot at Clackamas Town Center in Portland, Ore., Tuesday, Dec. 11, 2012. Witnesses say the scene went from cheery to chaotic in seconds when a gunman opened fire in the suburban Portland shopping mall Tuesday, killing two people and wounding another. (AP Photo/The Oregonian, Thomas Boyd)

  • A couple with a child embrace after they were released from the mall at Clackamas Town Center in Portland, Ore., Tuesday, Dec. 11, 2012. Witnesses say the scene went from cheery to chaotic in seconds when a gunman opened fire in the suburban Portland shopping mall Tuesday, killing two people and wounding another. (AP Photo/The Oregonian, Thomas Boyd)

  • In this image taken from video provided by KPTV in Portland, emergency vehicles are parked outside Clackamas Town Center in Portland, Ore., after a shooting Tuesday, Dec. 11, 2012. A gunman is dead after opening fire in the shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/KPTV) MANDATORY CREDIT, PORTLAND OUT

  • Clackamas Mall Shooting

    A tactical team moves through the mall parking lot at Clackamas Town Center in Portland, Ore., Tuesday, Dec. 11, 2012. Witnesses say the scene went from cheery to chaotic in seconds when a gunman opened fire in the suburban Portland shopping mall Tuesday, killing two people and wounding another. (AP Photo/The Oregonian, Thomas Boyd)

  • Witnesses are interviewed by a Clackamas County deputy outside Clackamas Town Center in Portland, Ore., where a shooting occurred, Tuesday, Dec. 11, 2012. A gunman opened fire at the suburban Portland shopping mall Tuesday, killing two people and wounding another as people were doing their Christmas shopping, authorities said. (AP Photo/The Oregonian, Thomas Boyd)

  • Mall workers and shoppers wait to be cleared to leave REI at Clackamas Town Center in Portland, Ore., where a shooting occurred Tuesday, Dec. 11, 2012. A gunman opened fire at the suburban Portland shopping mall Tuesday, killing two people and wounding another as people were doing their Christmas shopping, authorities said. (AP Photo/The Oregonian, Thomas Boyd)

  • Clackamas Mall Shooting

    Medical personnel are staged just outside Clackamas Town Center in Portland, Ore., after a shooting Tuesday, Dec. 11, 2012. A gunman is dead after opening fire in the shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/The Oregonian, Thomas Boyd)

  • First responders stand outside where a gunman opened fire at the Clackamas Town Center shopping mall earlier in Portland, Ore., Tuesday, Dec. 11, 2012. Police say three people are dead, including the gunman.(AP Photo/Don Ryan)

  • At Least Two Dead, One Injured In Oregon Mall Shooting

    CLACKAMAS, OR - DECEMBER 11: Emergency vehicles gather outside the Clackamas Town Center mall after a shooting on December 11, 2012 in Clackamas, Oregon. According to reports, two victims and the gunman are dead after emergency dispatchers received reports that a shooting had occurred and a man was seen with an assault rifle near the mall's food court around 3:29 p.m. (Photo by Craig Mitchelldyer/Getty Images)

  • At Least Two Dead, One Injured In Oregon Mall Shooting

    CLACKAMAS, OR - DECEMBER 11: Emergency responders gather outside the Clackamas Town Center mall after a shooting on December 11, 2012 in Clackamas, Oregon. According to reports, two victims and the gunman are dead after emergency dispatchers received reports that a shooting had occurred and a man was seen with an assault rifle near the mall's food court around 3:29 p.m. (Photo by Craig Mitchelldyer/Getty Images)

  • At Least Two Dead, One Injured In Oregon Mall Shooting

    CLACKAMAS, OR - DECEMBER 11: Memebers of a SWAT team wait outside the Clackamas Town Center after a shooting on December 11, 2012 in Clackamas, Oregon. According to reports, two victims and the gunman are dead after emergency dispatchers received reports that a shooting had occurred and a man was seen with an assault rifle near the mall's food court around 3:29 p.m. (Photo by Craig Mitchelldyer/Getty Images)

  • At Least Two Dead, One Injured In Oregon Mall Shooting

    CLACKAMAS, OR - DECEMBER 11: A police officer talks to people outside the Clackamas Town Center after a shooting on December 11, 2012 in Clackamas, Oregon. According to reports, two victims and the gunman are dead after emergency dispatchers received reports that a shooting had occurred and a man was seen with an assault rifle near the mall's food court around 3:29 p.m. (Photo by Craig Mitchelldyer/Getty Images)

  • At Least Two Dead, One Injured In Oregon Mall Shooting

    CLACKAMAS, OR - DECEMBER 11: Emergency vehicles gather outside the Clackamas Town Center mall after a shooting on December 11, 2012 in Clackamas, Oregon. According to reports, two victims and the gunman are dead after emergency dispatchers received reports that a shooting had occurred and a man was seen with an assault rifle near the mall's food court around 3:29 p.m. (Photo by Craig Mitchelldyer/Getty Images)

  • At Least Two Dead, One Injured In Oregon Mall Shooting

    CLACKAMAS, OR - DECEMBER 11: Law enforcement work outside the Clackamas Town Center mall after a shooting on December 11, 2012 in Clackamas, Oregon. According to reports, two victims and the gunman are dead after emergency dispatchers received reports that a shooting had occurred and a man was seen with an assault rifle near the mall's food court around 3:29 p.m. (Photo by Craig Mitchelldyer/Getty Images)

  • At Least Two Dead, One Injured In Oregon Mall Shooting

    CLACKAMAS, OR - DECEMBER 11: Emergency vehicles gather outside the Clackamas Town Center mall after a shooting on December 11, 2012 in Clackamas, Oregon. According to reports, two victims and the gunman are dead after emergency dispatchers received reports that a shooting had occurred and a man was seen with an assault rifle near the mall's food court around 3:29 p.m. (Photo by Craig Mitchelldyer/Getty Images)

  • At Least Two Dead, One Injured In Oregon Mall Shooting

    CLACKAMAS, OR - DECEMBER 11: A police officer and firefighter speak to a woman outside the Clackamas Town Center after a shooting on December 11, 2012 in Clackamas, Oregon. According to reports, two victims and the gunman are dead after emergency dispatchers received reports that a shooting had occurred and a man was seen with an assault rifle near the mall's food court around 3:29 p.m. (Photo by Craig Mitchelldyer/Getty Images)

  • At Least Two Dead, One Injured In Oregon Mall Shooting

    CLACKAMAS, OR - DECEMBER 11: People stand in front of Clackamas Town Center mall after a shooting on December 11, 2012 in Clackamas, Oregon. According to reports, two victims and the gunman are dead after emergency dispatchers received reports that a shooting had occurred and a man was seen with an assault rifle near the mall's food court around 3:29 p.m. (Photo by Craig Mitchelldyer/Getty Images)

  • At Least Two Dead, One Injured In Oregon Mall Shooting

    CLACKAMAS, OR - DECEMBER 11: Law enforcement work outside the Clackamas Town Center mall after a shooting on December 11, 2012 in Clackamas, Oregon. According to reports, two victims and the gunman are dead after emergency dispatchers received reports that a shooting had occurred and a man was seen with an assault rifle near the mall's food court around 3:29 p.m. (Photo by Craig Mitchelldyer/Getty Images)

  • Police and medics work the scene of a multiple shooting at Clackamas Town Center Mall in Clackamas, Ore., Tuesday Dec. 11, 2012. A gunman is dead after opening fire in the Portland, Ore., area shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/Greg Wahl-Stephens)

  • At Least Two Dead, One Injured In Oregon Mall Shooting

    CLACKAMAS, OR - DECEMBER 11: Memebers of a SWAT team wait outside the Clackamas Town Center after a shooting on December 11, 2012 in Clackamas, Oregon. According to reports, two victims and the gunman are dead after emergency dispatchers received reports that a shooting had occurred and a man was seen with an assault rifle near the mall's food court around 3:29 p.m. (Photo by Craig Mitchelldyer/Getty Images)

  • At Least Two Dead, One Injured In Oregon Mall Shooting

    CLACKAMAS, OR - DECEMBER 11: People evacuate the Clackamas Town Center mall after a shooting on December 11, 2012 in Clackamas, Oregon. According to reports, two victims and the gunman are dead after emergency dispatchers received reports that a shooting had occurred and a man was seen with an assault rifle near the mall's food court around 3:29 p.m. (Photo by Craig Mitchelldyer/Getty Images)

  • At Least Two Dead, One Injured In Oregon Mall Shooting

    CLACKAMAS, OR - DECEMBER 11: People stand outside the Clackamas Town Center after a shooting on December 11, 2012 in Clackamas, Oregon. According to reports, two victims and the gunman are dead after emergency dispatchers received reports that a shooting had occurred and a man was seen with an assault rifle near the mall's food court around 3:29 p.m. (Photo by Craig Mitchelldyer/Getty Images)

  • At Least Two Dead, One Injured In Oregon Mall Shooting

    CLACKAMAS, OR - DECEMBER 11: Law enforcement work outside the Clackamas Town Center mall after a shooting on December 11, 2012 in Clackamas, Oregon. According to reports, two victims and the gunman are dead after emergency dispatchers received reports that a shooting had occurred and a man was seen with an assault rifle near the mall's food court around 3:29 p.m. (Photo by Craig Mitchelldyer/Getty Images)

  • Clackamas Mall Shooting

    A law enforcement official secures the scene after a shooting at Clackamas Town Center in Portland, Ore., Tuesday, Dec. 11, 2012. A gunman is dead after opening fire at the shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/The Oregonian, Thomas Boyd)

  • Clackamas Mall Shooting

    Law enforcement personnel work the scene of a shooting at the Clackamas Town Center in Portland, Ore. Tuesday, Dec. 11, 2012. A gunman is dead after opening fire in the shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/The Oregonian, Thomas Boyd) MAGS OUT; TV OUT; LOCAL TV OUT; LOCAL INTERNET OUT; THE MERCURY OUT; WILLAMETTE WEEK OUT; PAMPLIN MEDIA GROUP OUT

  • Clackamas Mall Shooting

    Macy's employees are staged across the street from the Clackamas Town Center in Portland, Ore., Tuesday, Dec. 11, 2012. Witnesses say the scene went from cheery to chaotic in seconds when a gunman opened fire in the suburban Portland shopping mall Tuesday, killing two people and wounding another. (AP Photo/The Oregonian, Thomas Boyd)

  • A police officer conducts interviews with mall patrons outside the Clackamas Town Center in Clackamas, Ore. Tuesday, Dec. 11, 2012. A gunman is dead after opening fire in the Portland, Ore., area shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/The Oregonian, Bruce Ely) MAGS OUT; TV OUT; LOCAL TV OUT; LOCAL INTERNET OUT; THE MERCURY OUT; WILLAMETTE WEEK OUT; PAMPLIN MEDIA GROUP OUT

  • Clackamas Mall Shooting

    Emergency personnel stage an area outside the Clackamas Town Center in Portland, Ore., where a shooting occurred, Tuesday, Dec. 11, 2012. Witnesses say the scene went from cheery to chaotic in seconds when a gunman opened fire in the suburban Portland shopping mall Tuesday, killing two people and wounding another. (AP Photo/The Oregonian, Thomas Boyd)

  • Clackamas Mall Shooting

    Workers and shoppers wait to be cleared after a shooting occurred at Clackamas Town Center in Portland, Ore., Tuesday, Dec. 11, 2012. A gunman is dead after opening fire at the shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/The Oregonian, Thomas Boyd)