UCF Police Chief Richard Beary told reporters at a news conference James Oliver Seevakumaran, who killed himself in March, had detailed plans to use Molotov cocktails to attack students as they fled the housing complex after he pulled a fire alarm, the Orlando Sentinel reported.
Beary said Seevakumaran had worked out a timeline and a schematic of the seven-story dormitory.
"He actually did the math. ... He very clearly knew what he was about to do," Beary said.
Seevakumaran's roommate called 911 after Seevakumaran set off the fire alarm. Police responding to the call said they heard a gunshot before they found Seevakumaran's body.
The university Friday released an after-action review on the March 18 incident, concluding university staff and police responded effectively but recommending improvement in some campus security areas -- including housing policies and whether university security forces should have universal access to all campus buildings, the newspaper said.
Retired Navy Vice Adm. Alfred Harms Jr., who led the review, said UCF police were inside the building within 3 to 5 minutes after receiving a 911 call. He said if it had taken longer than that, "the outcome would have been dramatically different."