CHICAGO — A security guard was injured during a bank robbery in downtown Chicago Thursday.

According to police, law enforcement responded to an armed robbery at the Fifth Third Bank on South Wacker Drive in downtown Chicago just before 3 p.m. Thursday.

WGN-TV crews were able to confirm that a suspect shot out a window during the armed robbery before fleeing the scene. Pedestrians told WGN-TV crews that cash could be seen flying around outside the bank.

A 59-year-old bank security guard confronted the suspect when they pulled out a gun and began shooting.

The security guard produced his service weapon and fired back at the suspect. The 59-year-old suffered a graze wound before the suspect fled the scene eastbound on Madison Avenue.

The security guard was injured and treated at the scene, according to police.

According to the FBI, the suspect is described as being about 5 feet 7 inches tall and was wearing a black hooded jacket, a mask, winter gloves and blue jeans.

Dominik Modrzejewski said he saw people running and some taking cover behind garbage cans.

“Went over to the window and clearly saw a figure kind of running out shooting at the door, glass breaking and I started recording and I caught the tail end of him running and cash flying everywhere,” Modrzejewski said.

Anyone with information is asked to report it to the FBI at 312-421-6700 or online.

Tips can be reported to them anonymously.