A suspect dressed in all black handed a teller a note demanding money at the Chase Bank on North Western Avenue just after 11:30 a.m. Saturday, said police News Affairs Officer Michael Sullivan.
The FBI described the suspect as a 5-feet-5 to 5-feet-6 black man with black hair and brown eyes. He is believed to be in his 20s or 30s.
The FBI said the man has robbed 10 banks since Dec. 13, 2011, when he robbed the Chase Bank branch at 1700 N. Wells St.
The FBI described all of the robberies as non-takeover robberies.
A reward is being offered for information leading to his arrest, the FBI said.