ST. LOUIS • St. Louis police have released surveillance images of a man who robbed a bank in the city on Monday morning.

The man walked into a Commerce Bank branch at Natural Bridge Avenue and Newstead Avenue, west of Fairground Park, about 9:22 a.m.

The man handed the teller a piece of paper demanding she give him money. The robber had his hand in his pocket. The teller believed he had a weapon but she did not see one.

She gave the man money and he left. The man was last seen on a bicycle crossing Natural Bridge and heading west in an alley. The bike appeared to have a broken chain, authorities said.

They described the man as black, about 30-35 years old, about 6 feet to 6 feet 2 and about 220-250 pounds. He had a beard and wore a dark baseball cap, blue jeans and a white T-shirt under a dark hooded sweatshirt.

Police asked anyone with information to call CrimeStoppers at 1-866-371-8477.