Surveillance video shows the armed man, with a hood covering his face and waving a gun, walking into the Subway at approximately 11 p.m. Wednesday.
He confronted one employee, and demanded the night's proceeds. Two other employees were confronted by the gunman as well.
The suspect escaped with about $200 in cash.
Fortunately, no one was hurt.
Police are asking for the public's help in tracking down the suspect. if you have any information, you're asked to call the L.A. County Sheriff's Lakewood Station at (562) 623-3500.
