The man suspected in multiple hold ups at Philadelphia-area bank branches pulled off yet another robbery Monday morning, police said.

The unidentified suspect, who has be seen on surveillance video each time, is believed to have successfully robbed six banks and attempted to rob two others since Dec. 11, police said.

The newest robbery occurred at 10:35 a.m. at the Wells Fargo Bank branch in the 1200 block of East Lancaster Avenue in Bryn Mawr.

During each robbery, the suspect entered the bank and handed a teller "a threatening demand note," police said. After receiving the cash, he then fled the banks on foot. No one has been injured in any of the robberies and no weapons have been seen.

He previously robbed or tried to rob PNC Bank on South Easton Road in Glenside and Wells Fargo Bank at 1575 N. 52nd St. in Philadelphia, both last Friday; PNC Bank at 5900 N. Broad St. last Tuesday; Prudential Savings Bank at 1722 S. Broad St. last Monday; Valley Green Bank at 7226 Germantown Ave. on Dec. 18; PNC Bank, 230 S. Broad St., on Dec. 15; and Beneficial Bank at 1600 Chestnut St. on Dec. 11.

The suspect is described as a black male in his 30s, about five feet 10 inches, medium build, medium complexion, with eyeglasses.

Anyone with information is asked to call the FBI at (215)418-4000.