TOWSON, Md. -- The teenager accused of shooting an intellectually disabled classmate at a suburban Maryland high school was accustomed to firearms in the home and had endured his parents' contentious divorce, court documents show.

After 15-year-old Robert Wayne Gladden Jr. was taken into custody Monday, police executed a search warrant at the Kingsville home where he lives with his mother and stepfather. What they found, according to court documents: 11 guns, including shotguns, rifles, a 9mm handgun and two antique pistols.

Police also found a spent rifle casing in Gladden's bedroom and collected "miscellaneous live ammunition" from the master bedroom where most of the guns were found. Police also recovered marijuana.

A bail review hearing for Gladden, who has been charged as an adult with attempted murder and assault, was postponed Wednesday afternoon because the teen was still at a state psychiatric hospital where he was sent for an evaluation. He is being held without bail, and a new hearing was not immediately scheduled.

According to Baltimore County police, the pale, long-haired sophomore used a shotgun to fire at random in the cafeteria of Perry Hall High School Monday morning. Daniel Borowy, a 17-year-old who has Down syndrome, was shot in the back and critically wounded.

Gladden's attorney, George Psoras, said his client brought the shotgun to school to intimidate bullies and did not intend to shoot anyone. Police have said bullying was not a motive for the shooting. Psoras said Wednesday that he planned to file a motion to move the case to juvenile court.

Court documents indicate Gladden had a troubled home life. His parents were involved in contentious divorce proceedings that stretched over four years and included custody disputes. Documents show his father was behind more than $8,400 on his child support payments.

Gladden's 41-year-old father, Robert W. Gladden, also has a history of trouble with the law. In 2010, the younger Gladden answered the door when police executed a search warrant at his father's home, looking for drugs and guns, documents show. Police seized a 12-gauge shotgun during that search along with marijuana, and prosecutors later sought the forfeiture of the shotgun and a .45-caliber handgun.

Meanwhile, Gladden's stepfather, 43-year-old Andrew Piper, faces new charges of illegal gun possession and drug possession stemming from Monday's search. Piper was prohibited from possessing firearms because of a previous conviction for grand theft, documents show.

According to police and court documents, the younger Gladden brought a disassembled shotgun, 21 rounds of ammunition and a bottle of vodka with him for the first day of school Monday morning. On his Facebook page, he wrote, "First day of school, last day of my life."

The double-barreled shotgun was an antique and was taken from his father's house, police said.

Police said he assembled the shotgun in a restroom and walked into the cafeteria, where he pointed the gun at a nearby table and opened fire, wounding Borowy. The victim remained in critical condition Wednesday at Maryland Shock Trauma Center, a hospital spokeswoman said.

Trish Smelser, a family friend whose teenage daughter also has Down syndrome, said Borowy has undergone multiple surgeries but is improving.

"He's sitting up. His mom is very happy with how things are going. He's improving, he's a strong and strong-willed kid," Smelser said Wednesday.

Police and witnesses credited guidance counselor Jesse Wasmer with disarming Gladden and preventing further violence. A school system spokesman said Wasmer was eager to return to work and did not want to be interviewed.

Gladden's attorney challenged the narrative provided by police, saying that Gladden fired his initial gunshot into the floor. He said the shot that wounded Borowy was inadvertent and occurred after school staff rushed the teen and tried to get the gun away from him.

Psoras told The Associated Press that Gladden brought the gun to school in response to repeated bullying but never intended to use it.

"The stereotype right now is that we have a Columbine," Psoras said. "It's simply not the case. This is a typical teenager who was just starting this school year. He was being bullied, and the bullying has to stop."

Gladden's classmates said he appeared troubled and withdrawn. The three photos of him on his Facebook page, where he makes references to murder-suicide and mass murderer Charles Manson, show his face hidden behind his long hair.

Patrick Waters, a 14-year-old sophomore at Perry Hall, said that Gladden didn't have many friends and dressed "kind of different." Humberto Cardona, 15, said Gladden dressed "kind of gothic" and grew his hair out.

"He'd like wear it in front of his face, like he was hiding," Cardona said.

___

Nuckols reported from Washington.

___

PHOTOS: PERRY HALL SHOOTING
Loading Slideshow...
  • Robert Wayne Gladden Jr

    This booking photo made available by the Baltimore County Police Department, shows Robert Wayne Gladden, Jr., 15, of Baltimore. Gladden, Jr. was charged as an adult with attempted first degree murder and first degree assault in the shooting of a classmate on the first day of school at a Baltimore high school. (AP Photo/ Baltimore County Police Department)

  • Andrew Piper

    This Aug. 28, 2012 photo provided by the Baltimore County Police Department shows Andrew Piper of Baltimore. Piper is the stepfather of Robert Wayne Gladden, Jr, who was charged as an adult with attempted first degree murder and first degree assault in the shooting of a classmate on the first day of school at a Baltimore high school. Piper was arrested on charges unrelated to the shooting. He was charged with illegal possession of weapons and drugs at his home. (AP Photo/ Baltimore County Police Department)

  • Robert Gladden

    Profile picture from Robert Gladden's Facebook page

  • Robert Gladden

    Profile picture from Robert Gladden's Facebook page

  • Robert Gladden

    Profile picture from Robert Gladden's Facebook page

  • Tracie Bradford, of Perry Hall, Md., consoles her daughter Leah, a student at Perry Hall High School who says she was in the school's cafeteria when a student was shot there and critically wounded on the first day of classes, Monday, Aug. 27, 2012, in Perry Hall, Md. A suspect was taken into custody shortly after the shooting, according to police. No one else was reported injured. (AP Photo/Steve Ruark)

  • Parents gather at Ebenezer Road outside Perry Hall Middle School. Several had been notified by their children that a shooting happened at the nearby high school. <a href="http://perryhall.patch.com/articles/breaking-shooting-at-perry-hall-high-school" target="_hplink">Credit: Patch</a>

  • From left: Sarah Erpenstein and Carol Erpenstein. Sarah Erpenstein told Patch that she was in the cafeteria at the time of the shooting. <a href="http://perryhall.patch.com/articles/breaking-shooting-at-perry-hall-high-school" target="_hplink">Credit: Patch</a>

  • Students continue to file out of Perry Hall High School Monday afternoon following a shooting Monday morning. <a href="http://perryhall.patch.com/articles/breaking-shooting-at-perry-hall-high-school" target="_hplink">Credit: Patch</a>

  • Parents gather at Ebenezer Road outside Perry Hall Middle School. Several had been notified by their children that a shooting happened at the nearby high school. <a href="http://perryhall.patch.com/articles/breaking-shooting-at-perry-hall-high-school" target="_hplink">Credit: Patch</a>

  • Parents gather at Ebenezer Road outside Perry Hall Middle School. Several had been notified by their children that a shooting happened at the nearby high school. <a href="http://perryhall.patch.com/articles/breaking-shooting-at-perry-hall-high-school" target="_hplink">Credit: Patch</a>

  • Parents and students try to reunite after a student was shot and critically wounded on the first day of classes at Perry Hall High School, Monday, Aug. 27, 2012, in Perry Hall, Md. A suspect was taken into custody shortly after the shooting, according to police. No one else was reported injured. (AP Photo/Steve Ruark)

  • Becky Hobgood tries to locate her daughter after a student was shot and critically wounded on the first day of classes Perry Hall High School, Monday, Aug. 27, 2012, in Perry Hall, Md. A suspect was taken into custody shortly after the shooting, according to police. No one else was reported injured. (AP Photo/Steve Ruark)

  • Students evacuate Perry Hall High School after a student was shot and critically wounded on the first day of classes Monday, Aug. 27, 2012, in Perry Hall, Md. A suspect was taken into custody shortly after the shooting, according to police. No one else was reported injured. (AP Photo/Steve Ruark)

  • Parents wait to reunite with their children after a student was shot and critically wounded on the first day of classes at Perry Hall High School, Monday, Aug. 27, 2012, in Perry Hall, Md. A suspect was taken into custody shortly after the shooting, according to police. No one else was reported injured. (AP Photo/Steve Ruark)

  • Parents and students try to find each other after a student was shot and critically wounded on the first day of classes at Perry Hall High School Monday, Aug. 27, 2012, in Perry Hall, Md. A suspect was taken into custody shortly after the shooting, according to police. No one else was reported injured. (AP Photo/Steve Ruark)

  • A Baltimore County police officer speaks to a parent as students are evacuated from Perry Hall High School after a student was shot and critically wounded on the first day of classes Monday, Aug. 27, 2012, in Perry Hall, Md. A suspect was taken into custody shortly after the shooting, according to police. No one else was reported injured. (AP Photo/Steve Ruark)

  • Parents and students try to reunite after a student was shot and critically wounded on the first day of classes at Perry Hall High School, Monday, Aug. 27, 2012, in Perry Hall, Md. A suspect was taken into custody shortly after the shooting, according to police. No one else was reported injured. (AP Photo/Steve Ruark)

  • Tracie Bradford, Leah Bradford

    Tracie Bradford, of Perry Hall, Md., consoles her daughter Leah, a student at Perry Hall High School who says she was in the school's cafeteria when a student was shot there and critically wounded on the first day of classes, Monday, Aug. 27, 2012, in Perry Hall, Md. A suspect was taken into custody shortly after the shooting, according to police. No one else was reported injured. (AP Photo/Steve Ruark)