LYNN – Lynn Police on Monday morning released three surveillance photos of the man suspected of robbing Sovereign Bank at 39 Exchange St. on Thursday.The man entered the bank at approximately 4:30 p.m. and passed a note demanding money to the teller. A weapon was not shown, but police said he may have indicated he had a weapon at the time of the robbery. He then ran from the bank with an undisclosed amount of money. No injuries were reported.The suspect is described as a black male, approximately 5-feet, 5-inches tall, wearing a blue T-shirt.Anyone who may be able to identify the suspect based on the photographs is encouraged to contact Detective Pohle of the Lynn Police Criminal Investigation Division at 781-477-4319. Anyone wishing to remain anonymous can call the Lynn Police tipline at 781-477-4444 or text “tiplynn” and the information to tip411 847411).