The Georgia Bureau of Investigation identified the gunman as 30-year-old Patrick Joseph White, of Kennesaw, Georgia.

CDC security guards stopped White from driving into the campus on Friday before he parked near a pharmacy across the street and opened fire from a sidewalk. The bullets pierced “blast-resistant” windows across the campus, pinning employees down during the barrage. More than 500 shell casings were recovered, the GBI said.

The suspected gunman in the shooting of a police officer at the headquarters of the Centers for Disease Control and Prevention (CDC) in Atlanta on Friday has been identified as Patrick Joseph White of Kennesaw, Georgia.