The incident was reported at 4:35 p.m. when a person was reportedly under a train, BART spokesman Jim Allison said. That person was pronounced dead and the San Francisco medical examiner responded to the scene.
Trains were not stopping at the Balboa Park BART station for nearly two hours following the incident.
The Balboa Park BART station was reopened at about 6:20 p.m., Allison said, and trains are resuming normal service.
Riders can expect residual delays, according to Allison, but those delays should resolve themselves by about 7 p.m.
The person's death remains an ongoing BART police investigation, Allison said.