Police have released a surveillance photo of a man suspected of robbing a Mill Valley bank and then fleeing on a bicycle Saturday morning.
About 10 a.m., the suspect presented a note to a teller at the Wells Fargo bank branch at 525 Miller Ave., demanding money and saying that no one would be hurt, police said.
Witnesses told police that no weapons were seen.
Officers were alerted while the robbery was still in progress and arrived within two minutes, but the suspect had already fled, reportedly on a mountain bike, police said.
Mill Valley officers, along with Marin County Sheriff's Office, and Sausalito and Tiburon police searched for the suspect, but didn't find him.
Officials didn't release the amount of cash stolen in the robbery.
The suspect was described as an Asian male in his 30s to 40s, 5 feet 5 inches tall and weighing about 130 pounds. He was wearing a black SF Giants hat, a black windbreaker-style jacket and black sunglasses.
He was seen riding east away from the bank on a red mountain bicycle lacking markings.
Anyone with information about the suspect is asked to call (415) 389-4100.