COLONIE — A retired State Police investigator accidentally shot himself in the knee while trying on clothes in a Sears changing room Tuesday night, according to police.

Robert Talbot, 56, suffered the self-inflicted gun shot wound in Colonie Center Mall at around 8:22 p.m., when a .22-caliber handgun in his pants pocket accidentally fired, according to Lt. Stephen MacLasco of the Colonie Police Department. Talbot was taken for treatment to Albany Medical Center Hospital.

The incident left a pool of blood outside the changing room that a worker mopped up at around 9:05 p.m. Two security guards guarded the changing room.

Talbot resides in Ballston Spa. His medical condition could not immediately be obtained. Police did not believe it was life-threatening.