By CBS3 Staff

CONSHOHOCKEN, Pa. (CBS/AP) — An investigation is underway after a fatal police-involved shooting in Montgomery County. Officers were called to Plymouth Garden Apartments in Plymouth Township at 11:30 p.m. Tuesday after reports of an armed subject.

When officers arrived, they found a 22-year-old man armed with a handgun and a woman outside suffering from multiple stab wounds. The man reportedly did not comply with officers’ commands and was shot when he pointed the gun at them.

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He was transported to an area hospital where he later died.

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Police say the woman suffering from stab wounds was the man’s mother. She was taken to a local hospital and placed in stable condition.

County detectives were called to investigate, as is the protocol in officer-involved shootings, authorities said.

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(© Copyright 2021 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)