The CHP issued a SigAlert for westbound Interstate 580, east of Keller Avenue, due to the incident.
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The collision was reported at 2:17 p.m.
Video in the media player above is from a previous update
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A sigalert was issued around 2:45 p.m. initially blocking two lanes.
Then, all lanes were temporarily blocked for a brief time, the CHP said.
SKY7 flew over the scene and spotted a white vehicle following the accident.
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No word if there are any injuries or fatalities at this time.
This is an ongoing investigation, a CHP spokesperson said.
Bay City News contributed to this report