UPDATE: 12 killed, 59 wounded in Colo. theater shooting

Friday, July 20, 2012 | 1:18 p.m. CDT; updated 6:32 p.m. CDT, Saturday, July 21, 2012

AURORA, Colo. — A gunman wearing a gas mask and black SWAT gear hurled a gas canister inside a crowded movie theater during a midnight showing of the new Batman movie Friday and then opened fire, killing 12 people and wounding 59 others in an attack so heinous that some moviegoers at first thought they were watching Hollywood special effects.