03/24/2011 11:45 am ET Updated May 25, 2011

Border Agents Unwittingly Freed Suspects Near Border With Weapons From Federal Sting

On Jan. 14, 2010, federal border patrol agents stopped two men driving a car through the border-crossing town of Columbus, New Mexico. Inside the vehicle was a cache of assault weapons, including AK-47s, Ruger .45-caliber handguns and pistols called "cop killers" because their ammunition can penetrate armor.

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