The man suspected of carrying out the Colorado movie theater shooting, wearing an outfit of black ballistic gear, was a 24-year-old Phi Beta Kappa graduate student in neuroscience who started buying his four weapons legally in May.
James Eagan Holmes, from San Diego, was a graduate student in the neuroscience program at the University of Colorado Medical School campus in Aurora, a university spokesman told NBC News. He was in the process of withdrawing from school, the university confirmed.
Weapon purchases started in May
Four weapons were found at the scene, Oates said.
The purchase place and dates are still being traced, and the chief said he didn't know yet if Holmes had the weapons legally. Officials later told NBC News that all four were purchased legally, beginning in May.