ORLANDO, Fla. (WFTV) -- New video obtained by Channel 9 shows a University of Central Florida student pulling a fire alarm after planning an attack on campus last month.
The suspect, James Oliver Seevakumaran, instead turned a gun on himself inside his dorm room, authorities said.
Campus police said Seevakumaran, 30, was armed with two guns, hundreds of rounds of ammunition, a backpack filled with explosives and a plan to attack other students as they fled the seven-story Tower 1 dorm after he pulled the fire alarm.
In the videos, Seevakumaran can be seen pulling the fire alarm in Tower 1. One angle shows him from outside the door of his dorm room while the other angle is from the end of the hall.
Seevakumaran's plans were thrown off by campus police officers' quick response to the fire alarm and a 911 call from Seevakumaran's roommate, who had locked himself in a bathroom after Seevakumaran pointed a gun at him.
Officers arrived at the scene and found Seevakumaran dead with a self-inflicted gunshot wound to the head in his dorm room. No other students were hurt.
After the shooting, some 500 students were evacuated from the building and weren't allowed back in until police wrapped up at the crime scene.
Officials said police officers responded to the dorm within three minutes of the first call.
Police shed no light on a motive, but authorities said that before the incident, the school was in the process of removing Seevakumaran from the dormitory because he hadn't enrolled for the current semester.
He had attended the university from 2010 through the fall semester.
Detectives said they found notes and other writings that indicated Seevakumaran had carefully planned an attack and laid out a timeline of where he was going to be and what he was going to do.