Doctor in Psych Unit Shootout Released From Hospital

Investigators work the scene of a shooting Thursday, July 24, 2014, at Mercy Fitzgerald Hospital in Darby, Pa. A shooting at the suburban Philadelphia hospital campus has killed one worker and injured two other people. Prosecutor Jack Whelan says one of the injured is the gunman. Uncredited / AP

A patient who was shot remains in critical, but stable condition after emergency surgery.

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