A man head-butted a Colorado Springs police officer in the face early Friday morning while detained on suspicion of assaulting a man with a chain, police say.

Bobby Joe Harris Jr., 48, swung a metal chain into the face of a man walking his dog near the intersection of North Academy Boulevard and East Uintah Street around 1 a.m. Friday, according to police.

The victim fought back, punching Harris in the face, and both men received minor injuries. A police sergeant witnessed the fight and detained both men for further investigation.

While at the Sand Creek substation in southeast Colorado Springs, Harris head-butted an officer in the face, injuring him. He was arrested on suspicion of assault on a peace officer and second-degree assault and transported to jail.