The man who attacked CDC headquarters in Atlanta last week fired more than 500 rounds at buildings on the campus before he died from a self-inflicted gunshot wound, the Georgia Bureau of Investigation said at a news conference Tuesday.

GBI Director Chris Hosey told reporters the shooter, 30-year-old Patrick Joseph White, was armed with five firearms that belonged to his father. The shooter had no known prior criminal history.

The FBI’s special agent in charge, Paul Brown, noted that roughly 200 of the 500 bullets White fired struck the buildings, leading to a lengthy evacuation process late Friday as agents searched every room, thankfully finding no victims.

Hosey described the weapons as “a mixture of rifles, a shotgun and maybe a handgun” that White forcibly removed from his dad’s gun safe.

“They were secure and he forced his way into the safe that contained the weapons,” he said. ’He broke into it.”