OAKLAND (KPIX 5) – An investigation is underway into a fatal freeway shooting on westbound Interstate 580 during the Wednesday afternoon commute.

Just before 5:30 p.m., the California Highway Patrol issued an alert about police activity happening near the Seminary Avenue exit, not far from Mills College.

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Chopper video revealed officers investigating a white car that appeared to have its tires blown out. Officers were inspecting the vehicle and the roadway, possibly looking for evidence.

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According to KPIX 5 reporter Andrea Nakano, a coroner’s van was parked next to the vehicle, a Chevrolet sedan. At least one person died in the shooting.

The shooting forced the closure of westbound 580 for several hours, causing a backup that stretched several miles. According to Caltrans, all lanes were reopened by 8:45 p.m.

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As of late Wednesday night, authorities have not released details about the circumstances surrounding the shooting, the victim or potential suspects.