DETROIT -- Police say a woman who was being attacked by a stray dog in Detroit has been fatally shot after a man fired a gun at the dog and hit her instead.

CBS Detroit cites police as saying the woman, 53, was mauled by a pit bull while walking on Monday evening, was shot in the hip and taken to a hospital, where she was pronounced dead. Her name wasn't immediately released.

Police responded and searched for the dog, but it wasn't immediately found.

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Detroit police Captain Darin Szilagy says the man lived in the area. Szilagy says he was trying to be a "good Samaritan" and had a license to carry a concealed weapon. Szilagy says it's a tragic story, but notes "we're responsible for every round we fire."

The shooting is under investigation and prosecutors likely will review the case.