Ellington

ORLANDO, Fla. (AP) — The student behind a foiled attack plot at a Florida university was working off a checklist that included plans to get drunk, pull a fire alarm and then "give them hell," authorities said Tuesday.

James Oliver Seevakumaran was crossing items off his list ahead of his planned attack his classmates with guns and homemade explosives, University of Central Florida Police Chief Richard Beary said at a news conference.

The list found along with his dead body early Monday included drinking at a bar near campus and pulling the fire alarm — which investigators believe was meant to flush out victims. Beary says the final item was "give them hell."

Instead, Seevakumaran shot and killed himself as police officers arrived in response to the fire alarm and a 911 call from a roommate. Beary says authorities confirmed he went to the bar and drank.

At the time of the attack, packages were waiting for Seevakumaran at a campus mailroom containing two 22-round magazines and a sling for his rifle and a firearms training DVD.

Beary said authorities still aren't aware of a motive or significant circumstance that led Seevakumaran to plan for an attack. The chief said no written explanation was left.