VERNAL — A man in his 50s died Monday night after suffering an apparent heart attack while mountain biking near Red Fleet State Park, according to the Uintah County Sheriff's Office.

The man, who is from Alta, was riding with friends about 7:30 p.m. when he experienced difficulty breathing, Uintah County Undersheriff John Laursen said. The other riders said the man got off his bike and was pushing it up a small hill when he collapsed, Laursen said.

Two of the riders went to get help, while three others began CPR. Uintah County's search and rescue team was called out to help ambulance crews reach the man, Laursen said.

The man was taken to Ashley Regional Medical Center in Vernal, where doctors pronounced him dead. The man's name was being not released Monday night because authorities were still working to notify his family, Laursen said.

— Geoff Liesik