A bank was robbed Wednesday afternoon in west suburban Westchester.

The non-takeover robbery happened at 3:12 p.m. at the BMO Harris Bank branch at 10500 W. Cermak Road, according to the FBI.

The robber was described as a male who wore black pants, a black shirt, a black mask and black gloves, the FBI said. A reward of up to $1,000 was being offered for information leading to his arrest.

An image take from video surveillance shows the person who robbed a BMO Harris Bank branch Wednesday in Westchester. | FBI