Most recently, the robber held up a U.S. Bank branch at 2270 Pacific Coast Highway in Lomita Friday morning. He has also been linked to five other robberies at banks in Huntington Beach, Long Beach, Santa Monica, Marina del Rey and Cerritos.
Investigators say the robber wears a Detroit Tigers cap, demands cash in various denominations and makes a quick escape. Authorities say there may be two men working together.
If you have any information that can help investigators, you're urged to contact the FBI at 1 (888) CANT-HIDE or dial 911.