SUISUN CITY (CBS SF) — CHP reported that all lanes of Highway 12 near the border of Fairfield and Suisun City have reopened in both directions Tuesday evening after police activity shut down lanes for hours.

The incident was first reported on the 511.org Twitter account at about 3:30 p.m. An update about 15 minutes later clarified that there was police activity on CA-12 in both directions at Pennsylvania Avenue, but that all westbound lanes remained closed. The left eastbound lane was also closed.

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The KCBS Traffic Twitter account was reporting that there was an accident at the scene as well.

Just before 4:30 p.m., the 511.org Twitter account posted that the activity had closed all lanes in both directions. Westbound traffic is being forced to exit at Jackson Street, while eastbound traffic is being diverted to Pennsylvania Avenue.

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At 6:30 p.m., CHP said that the scene had cleared and all lanes had reopened in both directions. Drivers were advised to expect residual delays.

So far there has been no information from law enforcement about the nature of the police activity.

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