What happened at the Dryden/TMC Metro accident yesterday?

Yesterday around 5:00 pm, a ton of people gathered around the Dryden/TMC metro stop because the Northbound train had stopped in its tracks and a ton of police, emergency services, and metro workers locked down the intersection in front of Houston Methodist Hospital.

I heard from a bystander that somebody had committed suicide by laying on the tracks.

Can anyone confirm what actually happened?