A woman was shot to death in the Tenderloin on Tuesday night, police said.
Officers responded to the 100 block of Mason Street shortly after 8 p.m. to a report of a possible shooting victim, and located a woman with gunshot wound to her upper torso.
Emergency personnel attempted CPR on the woman, but she died at the scene, police said.
Officers identified a person of interest in the case, who was taken to the Tenderloin police station.
Anyone with information on the shooting is asked to call the San Francisco Police Department at (415) 575-4444.