SAN FRANCISCO (CBS SF) — BART is resuming regular service after a train struck a tree that fell on the tracks between the Balboa Park and Daly City stations in San Francisco on Tuesday.

At 9:27 p.m., after about four hours of hours of delays, BART announced on social media, “Crews are done! Opening up tracks and resuming regular service between 24th-Daly City.” BART was reopening Balboa Park and Glen Park stations.

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BART initially sent a tweet that there was a major delay “due to an obstruction” at 5:35 p.m.

BART officials confirmed shortly afterwards that a train leaving the Balboa Park station had struck a tree that had come down on the tracks.

The tree limb was blocking the tracks in both directions.

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At 8:40 p.m. BART officials announced that while the impacted train was now moving, crews were still working to remove debris and repair damage.

Mutual aid and bus bridges were being provided by Muni, Samtrans and Caltrain.

So far, there were no reports of any injuries due to the collision.

An earlier equipment problem on BART tracks near the Daly City station was already causing major delays Tuesday evening prior to the train colliding with the fallen tree, according to BART officials.

Those delays were occurring in both the East Bay and the San Francisco International Airport, Millbrae directions, BART officials said shortly before 5 p.m.

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BART operators were manually cranking train switches in order to allow trains to move through the station due to the equipment problem, according to a BART dispatcher.