St. Landry Parish Sheriff Bobby Guidroz identified the teen as Jacory Levier.
According to Guidroz, Levier was riding his horse near Beau Chêne High School when the horse became spooked. Guidroz says the teen then fell off the horse and into the pond and never resurfaced. The horse then took off and was later spotted by deputies running across LA 93.
Levier, Guidroz says, was with a group of other teens when the incident happened.
The case remains under investigation.