Aug 29, 2013 3:50 PM by KPNX
(KPNX) Police in Phoenix, Arizona have linked a shotgun picked up in a now outlawed gun buyback program to a cold case crime.
Shells taken from one of the weapons exchanged for a grocery store gift certificate were matched to evidence collected at the scene of a 2010 robbery and shooting.
The weapon was taken in during a three week police gun buyback program that was countered by Phoenix area gun dealers who set up their own nearby booths and offered cash for the same weapons.
Arizona has since passed a law ending the police buybacks.