A bicyclist who crashed into an open car door Tuesday morning in northwest suburban Arlington Heights has died.

Glenn Richmond, 63, of Arlington Heights, crashed into the open door of a 2015 Kia Optima as the car’s owner stood inside the door to retrieve items shortly before noon near Dunton Avenue and Thomas Street, according to Arlington Heights police and the┬áthe Cook County medical examiner’s office.

Richmond was not wearing a helmet and suffered a head injury in his fall from the bike. He was taken to Lutheran General Hospital in Park Ridge, where he died at 5:31 p.m. Wednesday, authorities said.

An autopsy conducted Sunday found Richmond died from injuries related to the crash, and his death was ruled an accident, the medical examiner’s office said.

The owner of the vehicle was also struck by Richmond as he crashed into the door, but was not hurt, police said.

An investigation involving a reconstruction of the crash was ongoing Thursday and no charges or citations had been issued, police said.