(Millard County, UT) — The Millard County Sheriff’s Office is asking for help to locate a missing 22-year-old man.

The Sheriff’s Office says a vehicle registered to Jonathan Barrett Brantley was found in the Notch Peak-Tule Valley area.

Brantley’s cell phone was found inside the vehicle. The Sheriff’s Office doesn’t know how long the vehicle has been in that area, adding that Brantley is considered endangered.