Tellers and customers alike didn’t even know it happened until it was all over.

The Bank of America branch in Twin Falls was robbed Monday morning, prompting a city-wide search for the suspect.

Twin Falls Police Department Lt. Craig Stotts said police are looking for a white male in his mid-30s, between 5 feet, 5 inches and 5 feet, 9 inches tall. The male has short, blond-brown hair, a pockmarked face and a dark, short handlebar-style mustache. He wore a white, hooded sweatshirt with a screen-printed graphic on its front and a dark-colored baseball cap, based on a surveillance image taken from the bank.

The suspect was last seen heading south on Shoshone Street on foot.

Stotts said police policy does not allow for the release of the amount stolen from the bank.

The robbery was subtle.

A surveillance video released by police shows the suspect enter the bank at 10:15 a.m., wait patiently in line, step up to the teller window out of frame, and then leave two minutes later. Customers inside the bank said they never knew a robbery was happening.

“He really didn’t say much,” said Elizabeth Brown, who was inside the bank. “He just handed her a note and left.”

“Nobody yelled, ‘Get down on the ground’ or nothing. It was just really quiet,” said another customer, Carolyn Olsen.

The robber allegedly claimed he had a gun, but nobody at the bank saw him produce a weapon, Officer Steve Benkula said. It is unknown if the robber had access to a car or any accomplices.

Once the suspect left, the bank locked its doors and called police. Emergency dispatchers received a report of the robbery at 10:20 a.m. from the branch at 1040 Shoshone St. E. Customers were allowed to leave the bank shortly after 10:30 a.m. while bank employees remained inside to undergo their post-robbery protocol.

Idaho State Police and the Twin Falls County Sheriff’s Office are assisting Twin Falls police with the investigation.