TAMPA, Fla. — Jockeys and their valets at the Tampa Bay Downs held a moment of silence in honor of an exercise rider that died Saturday morning.

Daniel Quintero, 19, died after a training accident at the Downs. Officials expressed condolences in Facebook and Twitter posts as members of the racetrack observed a moment of silence at 12:20 p.m. 

The cause of the accident is currently unknown.

Saturday's scheduled race at the Downs still took place despite the incident.