Gallatin County Sheriffs Office

Due to the seriousness of the injuries, the hiker was airlifted to an ambulance nearby.

The suspects led multiple law enforcement agencies on a high speed pursuit that ended Friday night near West Yellowstone.

Billings Police is working with Gallatin County authorities to investigate a death in Yellowstone County, after the two "persons of interest" in that death were also found deceased in West Yellowstone.