(Portland, Maine) - Portland police are investigating back-to-back bank robberies in the city that may have been committed by the same person. The Port Credit Union at 285 Forest Ave. was robbed around 11:45 a.m. by a man who showed a handgun and demanded cash.

Portland Police photo

A few minutes later, a man matching the description of the credit union robber held up the Bank of America branch at One City Center on Monument Square. He was last seen going into the parking garage at One City Center.

Police did not believe the man stayed in the garage, but locked it down as they searched from car to car with a police dog just in case he was hiding there or discarded items that might be evidence.

No one was allowed to access their vehicles while the search was ongoing. The parking garage was reopened to the public around 2 p.m. No one was injured in the robberies.