HAYWARD -- Police did a double-take this week when they arrested twin brothers following an armed bank robbery in the city.
The shaggy-haired duo, identified by police as Riley and Wyatt Holmes, 20, of Washington state, were arrested on suspicion of armed robbery in connection with the Wednesday afternoon stickup at a busy U.S. Bank branch.
Witnesses say that about 1:30 p.m. a male suspect -- later identified as Riley Holmes, entered the bank at 31045 Mission Blvd., announced a bank robbery and waved what appeared to be a gun in the air, Sgt. Mark Ormsby said Thursday.
Investigators later determined the weapon was a BB gun.
A teller complied with the demands and the suspect ran from the bank with a bag of an undisclosed amount cash, Ormsby said.
A bank alarm sounded, 911 calls poured in and police arrived shortly after.
At the scene, witnesses gave police a description of the armed suspect and officers spotted Riley Holmes -- a brown-eyed brunette -- near the intersection of Prestwick Avenue and St. Andrews Street.
He told officers he was looking for his brother, who was driving a silver Honda Accord, Ormsby said.
His brother, the brown-eyed, blonde-haired Wyatt Holmes, was stopped less than a mile away from the bank at Mission Boulevard and Garin Avenue and detained for questioning.
"He told us that he and his brother were on a road trip, ran out of money and ended up panhandling in San Francisco," Ormsby said.
When asked how they ended up in Hayward, Wyatt Holmes told police, "We just ended up here."
Riley Holmes reportedly told officers his brother didn't know about the robbery.
But police believe Wyatt may have been his brother's getaway driver.
His role in the crime remained under investigation Thursday.
Police found the Honda Accord parked near Prestwick Avenue, Ormsby said. It will be processed for evidence.
Investigators also recovered the bag, which was being examined for fingerprints, which is why police have not yet determined the amount of cash taken from the bank.
Bank officials told police they were out $739, Ormsby said.
"Officers also recovered another bag full of cash that hasn't been counted," Ormsby said. "We're not sure if it was money from panhandling or from another robbery. That's to be determined."
The robbery remained under investigation on Thursday.
Anyone with information about the armed heist can call police at 510-293-7000 or submit an anonymous tip at 510-293-7197.
Contact Natalie Neysa Alund at 510-293-2469. Follow her at Twitter.com/nataliealund.