Gunman may have smuggled weapon in shirt (AP)

This undated yearbook photo shows Robert A. Hawkins, identified by police as the man who opened fire with a rifle at a busy Omaha, Neb., department store Wednesday, Dec. 5, 2007. (AP Photo/Yearbook photo via KETV-TV)

AP - The teenage gunman who went on a shooting rampage in a department store may have smuggled an assault rifle into the mall underneath clothing, police said Thursday.

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