An FBI official said the suspect used a note demanding cash to rob one of the banks around 11 a.m. before attempting to rob three other banks in the afternoon.
The banks targeted included a Well Fargo on the 6000 block of Ball Road, a Bank of America on the 6000 block of Beach Boulevard, a Chase Bank on the 7000 block of Beach Boulevard and another Chase Bank on the 8000 block of Valley View Street.
The suspect is described as a white male wearing a white crewneck T shirt, jeans, sunglasses and a tan Los Angeles Dodgers baseball hat. He was also captured on bank surveillance.
The FBI, Orange County Sheriff's Department and Buena Park police are continuing a joint investigation. Anyone with information about the suspect is asked to call law enforcement.