Colo. Corrections Chief Killed, Gun Bills Signed

Police are searching for the person who shot and killed the head of Colorado's Department of Corrections, Tom Clements, as he answered the door to his Monument, Colo., home on Tuesday night.

Colorado Governor John Hickenlooper's emotional news conference about Clements comes the same day he signed landmark gun control legislation, placing new restrictions on firearms.

The signature of the bills comes exactly eight months after the deadly movie theater shooting in Aurora, Colo.

Starting July 1, people who buy or sell guns from other individuals or online in Colorado will be subjected to background checks. And ammunition magazines that hold more than 15 rounds will be banned.