He was dressed in a long-sleeve shirt and baseball cap.
The suspect had a bag and pulled out a note demanding money.
Bank tellers handed over some cash and the suspect fled out the door.
No vehicle was seen.
The same suspect is believed responsible for numerous earlier bank robberies in Tustin, Orange and Santa Ana. He also may be responsible for an Orange County gas station robbery.
The suspect typically makes statements about wanting $100 bills, and that he is armed.
The FBI has nicknamed him the "100s and Armed Bandit."
Although no gun was seen in the Fullerton robbery, the suspect has displayed a handgun in previous robberies.
He is described as a white male between 30 and 50 years old, between 5 feet 6 inches and 5 feet 9 inches tall, with a thin to average build, with brown hair and clean-shaven.
Anyone with information is asked to contact the Fullerton Police Department at (714) 738-6753.
Your feedback is important to us! Please complete a brief survey so we may continue to improve abc7.com