A caseworker was fatally shot inside the psychiatric unit of Mercy Fitzgerald Hospital on Thursday afternoon (July 24).

Accompanied by a female caseworker, Richard Plotts, a mental patient who has previously had run-ins with medical staff, visited a psychiatrist office at around 2:30 p.m.

Plotts, a Darby resident in his mid-30s, soon became agitated and started an argument with the doctor. His shouting prompted a hospital staffer to open the door. The staffer saw that Plotts was pointing a gun at the doctor but did not see the caseworker. He closed the door quietly and dialed 911.

Gunfire was heard soon after, and the caseworker was later found dead of gunshot wounds. The doctor took out his own gun and fired three shots at Plotts, but he also suffered a grazing bullet wound to the head.

According to a report by NBC Philadelphia, other doctors and staffers rushed into the room and tackled Plotts.

Plotts was shot twice in the torso and once in the arm. He is now in critical condition. The identities of the victims were not released, but both the doctor and the caseworker were in their fifties.

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