BOSTON (CBS) — Police are looking for a man who they say has robbed the same bank three times in Allston in one month.

The suspect in the Bank of America on Comm Ave in Allston on May 10. (credit: MassMostWanted.com)

The robberies happened at the Bank of America at 1237 Commonwealth Avenue on April 13, April 25 and May 10.

Police say each time the suspect passed a teller a note demanding money, and at least two of the times said he had a gun.

The man is described as being white or Hispanic, between 25 and 30 years old, 5 feet 9 inches tall to 6 feet 2 inches tall, and weighing between 180 and 190 pounds.

Each time he was also wearing a baseball hat.

The suspect in the Bank of America on Comm Ave in Allston on April 25. (credit: MassMostWanted.com)

Anyone with information is asked to call the FBI at 617-223-6408.