ET]Police are searching for a second gunman in the shooting at an outlet mall in Allen, Texas, a suburb of Dallas, a law enforcement source tells CNN. There is a search for a “second gunman,” according to the law enforcement source, based on descriptions from witnesses, although the involvement of a second shooter is not confirmed. [Previous reporting]Authorities in a suburb of Dallas are responding to a reported shooting at an outlet mall, with ATF personnel on the scene at Allen Premium Outlets. Tony Wright, an Allen resident whose home backs up to the Allen Premium Outlets, said his family thought they heard construction before they realized it was gunshots. But he said once they saw people fleeing the outlet mall, the family locked the doors and hunkered down.

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