Six people were in stable condition after being shot and wounded in the same incident in San Francisco Saturday night, police said.

The gunfire erupted about 6 p.m. local time Saturday not far from the Bayview Opera House, the San Francisco Police Department said in a statement.

It’s unclear how badly the victims were hurt.

Several people called 911 to report the gunshots, but police didn’t immediately have a suspect.

The scene was strewn with spent shell casings, the department tweeted. Officers were on the scene into Sunday morning.