OAKLAND — One person was injured in a shooting that led to a crash, snarling commute traffic on eastbound Interstate 580 in Oakland, authorities said Wednesday afternoon.

The incident was reported about 3:20 p.m. Wednesday on the freeway under the Highway 24 overpass, authorities said. The wounded man was transported to Highland Hospital with a gunshot wound to the abdomen; his condition was not immediately known.

California Highway Patrol officials said witnesses had reported seeing an unknown number of men running off the freeway after the crash. One other man was detained for questioning, but was not placed under arrest.

Three cars were stopped in the eastbound lanes after the crash, but one driver was allowed to leave the scene after police determined that the person was not hurt and not a suspect in the shooting.

Two other cars — a gold Acura with several visible bullet holes and a dark late-model Chevy Impala — remained pointed westbound in the eastbound lanes about 5 p.m. All but one eastbound lane was closed until about 7 p.m.

Oakland police were investigating the incident. No arrests have been made, Oakland police spokeswoman Officer Johnna Watson said.

Anyone with information on the shooting is asked to call the department’s felony assault section at 510-238-3770.

David DeBolt covers breaking news. Contact him at 510-208-6453. Follow him at Twitter.com/daviddebolt.