A San Francisco Municipal Railway light rail vehicle on the J-Church line derailed near the city’s Mission Dolores Park this afternoon, affecting service on the line for nearly five hours, according to Muni officials.

Shortly after 2:30 p.m., a light rail vehicle traveling south derailed near the intersection of Church and 20th streets, according to Muni officials.

No injuries were reported.

Crews worked to get the vehicle back on the tracks, and the scene was cleared by 7:26 p.m., according to Muni officials.

Bus shuttles were set up to serve J-Church riders between 16th Street and 30th Street for nearly five hours while the service was affected on the line.

The cause of the derailment is under investigation, according to Muni officials.

The operator of the vehicle has been placed on non-driving status and will be tested for drugs and alcohol, as is standard Muni procedure.

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