PHILADELPHIA (CBS) — The FBI and Philadelphia police need the public’s help to identify a bank robbery suspect.

Investigators say the man tried to rob two Philadelphia banks, but only made off with cash from one of them.

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They say on March 13, he entered the Bank of America at 18th Street and Allegheny Avenue, handed the teller a demand note and threatened to blow up the bank.

He ran away empty-handed.

Investigators say on April 20, the same man walked into the Beneficial Bank branch in the 1400 block of Rhawn Street, showed a demand note to a teller, and got away with an undisclosed amount of cash.

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They say he fled in a black Germantown taxi cab.

He is described as a black male in his late 30s to early 40s, with a goatee, and a neck tattoo.