The teen suspected in the Maryland high school shooting on Monday left an ominous Facebook post on the day of the incident.
ABC News reports that 15-year-old Robert Wayne Gladden Jr. posted, "First day of school, last day of my life" early Monday morning, according to authorities.
Gladden is accused of shooting a Perry Hall High School classmate just before 11:00 a.m in the cafeteria. He's charged with attempted first-degree murder.
Witnesses said that Gladden shot one round into the victim's back before teachers at the Baltimore County high school grabbed him. He released a second round toward the ceiling.
PHOTOS: (Story Continues Below)
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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)
The student victim was taken to Baltimore Regional Hospital Shock Trauma where he remains in critical condition, officials said.
The suspect's father, previously told the AP that his son's alleged actions may have been motivated by bullying.
But Baltimore County Police Chief Jim Johnson told ABC News he didn't think bullying was a factor.
"We are aware that there are many reports that the suspect was a victim of bullying," Johnson said. "We cannot confirm those reports. Robert Gladden's conversations with investigators have not indicated bullying was an issue in this case."
Gladden's lawyer, George Psoras, said his client brought a shotgun to school to intimidate bullies and did not aim it at classmates or intend to harm anyone. Psoras said he believes Gladden fired into the floor and the gun discharged again accidentally while teachers tried to wrestle it away.
Gladden's stepfather, Andrew Piper, was arrested Tuesday on drug and weapons charges.
Piper was arrested for marijuana and illegal firearm possession.
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Posted: 08/28/2012 7:26 pm Updated: 08/28/2012 7:29 pm