An armed man robbed First Union National Bank in Jessup yesterday of an undisclosed amount of cash, Howard County police said.

The robber - described as a black man, about 5 feet 10 and weighing 170 to 180 pounds and wearing a straw hat, sunglasses, khaki pants, tie and sports coat - entered the bank in the 8600 block of Washington Blvd. about 8:15 a.m. He approached two employees with what police believe was a stun gun and demanded money, police said.

After he received the cash, the man fled north on Washington Boulevard on foot, police said.

Police ask anyone with information to call 410-313-3200.