Police say the man was hit and killed by an outbound train at the Powell Street Station at about 2:40 p.m.
Moments after this all happened, we were able to talk with a few people who say they knew the man who was killed. They say he is homeless and stored his backpack under the Muni platform along with other people.
Multiple people have told us the man did not commit suicide, but instead was trying to get to his backpack when he was hit by the train.
Police say paramedics quickly arrived, but the man was pronounced dead at the scene.
This created a confusing situation for Muni riders, especially since Market Street was so congested in part because of the Chinese New Year Parade.
"She told us that the station's not working downstairs," Muni rider Emily Kovach said. "So we're trying to get to Castro and we don't' know how to get there cause we're not familiar with the area really."
While the Powell Station was closed, Muni light rail vehicles between the Van Ness and Embarcardero stations was stopped. Muni tweeted that bus shuttles were running between the West Portal and Embarcadero stations.
At about 6:30 p.m., 511 Bay Area tweeted that normal service was resuming, though bus shuttles will remain in place.
BART was not affected by the station closure.