Emergency teams are rushing to the site of where an F-16 Fighting Falcon jet crashed in northwestern Arizona on Thursday morning.
Fox News said there was no immediate word on the condition of the pilot after the crash near Bagdad in Yavapai County. Officials suggested that the remote location and rugged terrain may have made it harder to reach the pilot.
The jet was assigned to the 56th Fighter Wing at Luke Air Force Base. It crashed around 8.45am.
Spokeswoman 1st Lt. Tanya Wren said the cause of the crash was not known and no other information was immediately available.
The Yavapai County Sheriff's Office sent a helicopter to the crash site but the crew had not yet found it yet, spokesman Dwight D'Evelyn said.
Arizona Department of Public Safety spokesman Quentin Mehr said the department is sending troopers, a rescue helicopter and explosive ordinance and hazardous material teams.