17-year-old Derek Prescott was driving on U.S.Highway 34 Saturday night between Greeley and Kersey when he collided with a loose horse on the road.  7News Denver reports Prescott's pickup traveled into the median and down an embankment where it came to rest against the tree. He was pronounced dead at the scene. He was wearing his seatbelt.

Three other vehicles also hit the horse though no major injuries were reported.

It’s not clear where the saddled horse came from but there were reports of a ranch rodeo in the area Saturday night.

Hundreds gathered last night to remember Derek...see more in the Greeley Tribune.