Police have filed charges against a man after he dragged an officer during a routine traffic stop according to police.
Christopher Hartzol, of the 8700 block of S. Ridgeland Ave. was charged with aggravated battery, speeding and negligent driving.
Officers stopped Hartzol on S. Lake Shore Drive on Friday night and ordered him to step out of his car.
Police said Hartzol refused and when the officer tried to pull him out, Hartzol stepped on the gas.
The officer who was dragged suffered a knee injury.