The CHP said the Contra Costa County Sheriff's Department was in pursuit of person on the freeway as the CHP helped close lanes as authorities detain the person.
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All lanes in both directions at Central Ave. were reportedly closed at 1:18 p.m. due to police activity, according to 511 SF Bay.
Then, at 1:37 p.m., the eastbound directions were reopened, the traffic agency said.
No further details were given on the pursuit.
This story is developing. Check back for updates.