OAKLAND -- Lanes of westbound Interstate 580 at Seminary Avenue were blocked late Wednesday as Oakland police and CHP officers investigated a shooting between cars.

Police released no details on the incident, confirming only that the approximately 8:30 p.m. shooting occurred between two cars on the freeway, but that no victims had been located.

The CHP closed all lanes of westbound 580 during the investigation, and motorists were advised to use alternate routes.

Shortly after 11 p.m. the two right lanes were reopened on the highway, while the two left lanes remain blocked, the CHP said.

Staff photographer Jane Tyska contributed to this report. Contact Katie Nelson at 925-945-4780 or follow her at Twitter.com/katienelson210.