Deputies from the Los Angeles County Sheriff’s Department have fatally shot a man they say was wielding a knife outside a business in Lancaster Sunday afternoon.

The Sheriff’s Department was called for a reported disturbed man with a knife in the 1800 block of West Avenue J at 1:08 p.m., authorities said.

A little less than half an hour later, at least one deputy opened fire, officials said, and the man was taken by ambulance to a local hospital in unknown condition.

He was later pronounced dead, the LASD added in an alert, and no deputies were hurt.

Photos from the scene show what appears to be a small crossbow, which one witness said is what prompted the police to open fire.

Anyone with information is asked to contact the LASD Homicide Bureau at 323-890-5500.

To provide information anonymously, call Crime Stoppers at 800-222-TIPS (8477) or visit lacrimestoppers.org.