Charges are pending against a driver who engaged in a cross-town act of road rage with an off-duty police officer that ended in a collision.

The incident began late Wednesday night when an off-duty Tucson Police Department officer was heading home in an unmarked vehicle. He merged onto South Aviation Highway from East 22nd Street and unintentionally almost collided with a pick-up truck driven by Eric Santos, 38, said Deputy Tracy Suitt, spokesman for the Pima County Sheriff’s Department.

After the near miss, Santos closely followed the officer through the downtown area and onto westbound Interstate 10.

“As the officer decreased his speed to exit I-10 at the Ina Road, Santos deliberately rammed and pushed the officer’s vehicle,” Suitt said. “The officer proceeded eastbound on Ina Road with Santos still behind him. He turned northbound on Thornydale Road and called 911 to report the incident.”

At the intersection of North Thornydale and West Cortaro Farms roads, the officer made sure there was no on coming traffic and made a left hand turn on a red arrow to avoid another confrontation with Santos, Suitt said.

Santos followed and collided with a southbound car driven by a woman. Suitt did not know whether Santos also turned against the light.

Santos and a woman in his vehicle were taken by ambulance to a local hospital with non-life threatening injuries.

The incident is still under investigation and charges are pending against Santos, Suitt said.