BIRMINGHAM, MI -- Police in Birmingham say they received an emergency call about a man displaying a handgun during an incident of road rage about 7 p.m. Friday.

Police haven't released many details about the incident, but say the man, 43, identified himself as a Detroit police officer after being arrested by Birmingham police in Royal Oak, where he was driving after the altercation.

"A semi-automatic handgun was recovered from the vehicle," Birmingham police said in a statement Monday. "The driver was processed and released pending the reports being submitted to the Oakland County Prosecutor’s Office for charges.

"Detroit Police Internal Affairs Division was notified about the incident."