LEWISTON — Police worked quickly to nab two suspects in a Lewiston bank robbery, and authorities are now looking into whether the pair is involved in other heists.

A branch of the Auburn Savings bank was robbed by somebody who showed a gun at about 3:30 p.m. on Wednesday. No one was hurt.

A witness gave police a description of the getaway vehicle, and the car was pulled over about an hour later in Windham.

Police arrested 29-year-old Paul Sans and 30-year-old Maria Mattson, both of Westbrook, and charged them with robbery.

Windham police are investigating whether Sans and Mattson are connected to a bank robbery in that community last week.

Federal authorities are expected to join the investigation.