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BART service through the Transbay Tube resumed late this afternoon after an early morning three-alarm fire near the West Oakland station closed the tracks between the East Bay and San Francisco, a BART spokesman said. 

Just before 4 p.m., the first train of the day was arriving at the West Oakland BART station from San Francisco, spokesman Jim Allison said. 

Six or seven test trains successfully traveled along the tracks this afternoon, allowing limited service to resume for the evening commute, Allison said. The test trains did not carry passengers. 

Trains will be traveling at slightly reduced speeds this evening, he said. 

BART service is expected to be back to normal in time for the Friday morning commute, Allison said.