OAKLAND (CBS SF) — Officials with BART issued an update Wednesday evening that MacArthur Station in Oakland had reopened after being shut down due to a “major medical emergency.”

BART trains were not stopping at the station for the better part of an hour.

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BART announced that the station had reopened at 5:48 p.m. Trains stops at the station have resumed.

Shortly before 5 p.m., the @SFBARTalert Twitter account posted that there was a 10-minute delay at the MacArthur Station in the Richmond direction due to a major medical emergency.

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Moments later, the account tweeted that trains traveling in all directions were not stopping at the station.

At about 5:05 p.m., BART announced that the station was closed.

Mutual aid was provided on AC transit buses 51, 51A and 72 from 19th St to MacArthur, according to BART. Riders are asked to expect major residual delays system wide.

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BART has not released any details regarding the medical emergency that shut down the station.