The Los Angeles Police Department’s Operations West Bureau Homicide Unit is investigating a shooting on Aug. 7 in which a security guard shot and killed a homeless woman in a grocery store at Hollywood Boulevard and Western Avenue.

The shooting occurred at approximately 3 p.m. at a Ralphs store at 5429 Hollywood Blvd. When officers arrived, they found the security guard rendering first aid to the victim, police said.

According to the preliminary investigation, the uniformed guard shot the women after she first confronted him with a fire extinguisher and then a screwdriver inside the store. The guard called police and is cooperating with investigators. Authorities did not arrest or identify the guard.

Los Angeles Fire Department paramedics took the woman to a hospital, where she was pronounced dead. Her identity was not released. Anyone who witnessed the incident or has information is asked to call (213)382-9470.