James Eagan Holmes ( born December 13 , 1987 ) is an American convicted murderer responsible for the 2012 Aurora , Colorado shooting in which he killed 12 people and injured 70 others at a Century 16 movie theater on July 20 , 2012 . He had no known criminal background before the shooting occurred . Holmes booby-trapped his apartment with explosives before the shooting , which were defused one day later by a bomb squad
2012 Aurora , Colorado shooting
2012 Aurora, Colorado shooting
James Holmes (mass murderer)