SAN LEANDRO — Gunfire erupted on Interstate 880 early Monday morning, sending a person in another car to the hospital and turning the morning commute into a parking lot for hours.

California Highway Patrol Officer Joseph Fowler said the first 911 call came in around 2:30 a.m. as a road-rage incident, followed by a second call for shots fired.

Officers responded to southbound I-880 at Lewelling Boulevard, finding a black Mitsubishi sedan in the No. 1 lane. Inside were four men, including a driver suffering from a gunshot wound to the head. The other three men were not hurt, and ambulance workers cared for the injured person, who was listed in critical condition Monday afternoon at an area hospital.

The agency shut down southbound I-880 at Lewelling Boulevard at 2:50 a.m. and did not re-open lanes until 9 a.m., Fowler said. Big rigs were allowed to use Interstate 580 through Oakland during the investigation.

Fowler said the suspect vehicle was described only as a white sedan. The CHP did not identify any suspects.

Anyone with information about the shooting should call the CHP’s Hayward office at 510-489-1500 or 800-TELL-CHP.

Staff writer George Kelly contributed to this report. Contact Rick Hurd at 925-945-4789