The BART station at 24th and Mission streets was shut down shortly after noon Saturday due to a “major medical emergency,” according to a statement from the transit system.

It’s unclear whether the emergency developed aboard the train or elsewhere in the station.

According to a statement from BART spokesperson Chris Filippi, as of 1:30 p.m., major delays persisted and trains were not stopping at 24th Street station. Trains were single-tracking through 24th Street station, and some trains from the East Bay (Warm Springs to Daly City and Richmond to Millbrae) were being turned back at Montgomery Street station.

The incident is still under investigation, according to the statement.

A Mission Local contributor who stopped by the station Saturday afternoon said fire department and police responded to the scene. The contributor watched as first responders with medical packs and a stretcher waited for the station elevator to reach the platform. Station workers soon began closing the station, she said, and asked passengers to leave.

Update: At 2:12 p.m. Filippi issued another statement, announcing that BART was recovering from delays and the medical emergency had been resolved. Regular service was in the process of being restored.