Federal authorities are searching for pickup truck possibly involved in the death of a 21-year-old man near Shiprock last month.
The FBI says the body of 21-year-old Ryan Hill was found June 22 on Mesa Farm Road about six miles west of Shiprock on the Navajo Nation.
They say a witness reported seeing a man run after a bright red pickup truck shortly before the body was discovered.
FBI officials say the witness described the truck as stopping and starting while the man chased it.
Authorities are investigating whether Hill was struck by the vehicle or pushed out it.
Autopsy results are pending.
Investigators want to talk to anyone who may know the owner or whereabouts of the truck or who may have been in the area at the time.
Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.