In the early hours of Monday, a gunman dressed in scrubs walked into a Philadelphia hospital where he worked, shot one colleague dead, then shot two police officers in a gun battle before his arrest. Action News reports that a 55-year-old man wearing blue scrubs, a mask, and a black backpack opened fire inside Thomas Jefferson University Hospital shortly after midnight, hitting a colleague who died of their wounds. “We do believe that other employee was targeted,” said Philadelphia Police Commissioner Danielle Outlaw. “The reasons why, at this point we still don't know.” After the shooting, the man fled the hospital in a U-Haul and shot two cops before he was shot and arrested. The officers are reported to be in a stable condition and the suspect is also expected to survive. Outlaw said the suspect, who is yet to be publicly identified, was wearing body armor and had “multiple weapons” on him when he was apprehended. Police are investigating why the suspect targeted his hospital colleague.