SLICKVILLE — Authorities are investigating the death of a horse that collapsed, killing the rider, at a Western Pennsylvania stable.

A Western Pennsylvania newspaper reports that the Slickville Volunteer Fire Department in Westmoreland County responded to Stonehouse Stables shortly after 2 p.m. Saturday.

Fire chief Bobby Rosatti said arriving emergency personnel found both horse and rider dead. The rider, a woman who was not immediately identified, was pinned beneath the fallen animal.