Police are asking for help in identifying an armed bandit who held up Dunkin' Donuts shops three times in late November.

The suspect first struck on Nov. 15 at  the Dunkin' Donuts on the 8100 block of Stenton Ave. on the border of the city's Wyndmoor and Chestnut Hill neighborhoods. With his face covered with a surgical mask, the gun entered the shop shortly before 9 a.m. and announced "open the register, you're being robbed." The gunman, who was wearing latex gloves, also pointed his semi-automatic silver weapon at a customer and demanded his money. After taking an unknown amount of cash, the bandit fled on food towards the 900 block of Ellen Street, police said.

Two weeks later, the same masked gunman visited a Dunkin' Donuts in Cheltenham Township. On Sunday, Nov. 29, he walked into the shop at Front Street and Cheltenham Avenue shortly before 6 p.m. He pulled out his handgun and demanded money from the cash registers be stuffed inside a bag. As a cashier emptied out the till, he emptied a tip jar on the counter. He escaped with an undetermined amount of cash and was last seen heading south on foot into Philadelphia, police said.

The next day, Nov. 30, the bandit returned to the Dunkin' Donuts on Stenton Ave. and wielding a silver handgun, again demanded money. He fled with an undetermined amount of cash.

The suspect is described as a black male with a light complexion in his early- to mid-20s.  He stands about 5-foot-8 and appears to weigh about 170 pounds.

Anyone with information is asked to contact Philadelphia police at 215-686-TIPS (8477).