LAKE FOREST, Calif. (KABC) — A shot was fired during a bank robbery Thursday afternoon in Lake Forest, and a search was underway for the suspect, authorities said.

No injuries were reported in the shooting.

Deputies responded shortly after noon to a report of a bank robbery in progress at a Chase branch near the intersection of Portola and Bake drives, the Orange County Sheriff’s Department said.

The shot was fired before police arrived on the scene, a sheriff’s spokesperson said. Investigators could not immediately confirm whether the person who opened fire was the suspect, a security guard or someone else.

The suspect fled and remained at large, prompting authorities to establish a containment zone and launch a search. No description of the person sought was available.

It was unclear whether any cash was stolen from the bank.