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US man faces charges in hospital shooting

Prosecutor: Patient faces charges in fatal US hospital shooting; remains in critical condition

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 workers leave the scene of a shooting Thursday, July 24, 2014,  at Mercy Fitzgerald Hospital in Darby, Pa. Police in suburban Philadelphia ar...
Hospital workers view police activity at the scene of a shooting Thursday, July 24, 2014,  at Mercy Fitzgerald Hospital in Darby, Pa. Police in suburb...
A hospital worker views police activity around the scene of a shooting Thursday, July 24, 2014,  at Mercy Fitzgerald Hospital in Darby, Pa. Police in ...
A hospital worker embraces a woman near the scene of a shooting at the Mercy Fitzgerald Hospital in Darby, Pa. on Thursday, July 24, 2014. A prosecuto...
A police officer carries his weapon near the scene of a shooting at the Mercy Fitzgerald Hospital in Darby, Pa. on Thursday, July 24, 2014. A prosecut...
An officer stands guard near the scene of a shooting Thursday, July 24, 2014, at Mercy Fitzgerald Hospital in Darby, Pa. A doctor grazed by gunfire fr...

Hospital Shooting

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 Shooting

Hospital workers leave the scene of a shooting Thursday, July 24, 2014, at Mercy Fitzgerald Hospital in Darby, Pa. Police in suburban Philadelphia ar...

Hospital Shooting

Hospital workers view police activity at the scene of a shooting Thursday, July 24, 2014, at Mercy Fitzgerald Hospital in Darby, Pa. Police in suburb...

Hospital Shooting

A hospital worker views police activity around the scene of a shooting Thursday, July 24, 2014, at Mercy Fitzgerald Hospital in Darby, Pa. Police in ...

Hospital Shooting

A hospital worker embraces a woman near the scene of a shooting at the Mercy Fitzgerald Hospital in Darby, Pa. on Thursday, July 24, 2014. A prosecuto...

Hospital Shooting

A police officer carries his weapon near the scene of a shooting at the Mercy Fitzgerald Hospital in Darby, Pa. on Thursday, July 24, 2014. A prosecut...

Hospital Shooting

An officer stands guard near the scene of a shooting Thursday, July 24, 2014, at Mercy Fitzgerald Hospital in Darby, Pa. A doctor grazed by gunfire fr...

DARBY, Pennsylvania (AP) -- A prosecutor's spokeswoman says a man accused of shooting a caseworker is expected to be arraigned on murder charges.

Richard Plotts was later shot by his psychiatrist. Authorities say the 49-year-old remains listed in critical condition.

The shooting occurred Thursday at a wellness center outside Philadelphia. The psychiatrist suffered a minor wound.

Authorities are trying to determine more about the relationship between Dr. Lee Silverman and Plotts, including whether the doctor had reason to fear him and why he had a gun.

The hospital said its policy bars anyone but on-duty law enforcement officers from bringing a weapon on to its campus.