A helicopter tour company said a man took off his seat belt, opened a door and intentionally fell to his death during a sightseeing flight over the Grand Canyon National Park Thursday.
Authorities say the investigation of the man's death continues. They've offered few details on what led up to his exit from the helicopter about 90 miles northwest of Flagstaff, Ariz.
The man fell about 4,000 feet.
Officials don't know if the man had any connection to the others on board the helicopter. The pilot and four other passengers were shaken by what happened but weren't hurt.
Authorities say the cause of death won't be determined until the body is recovered from White's Butte.
The search in the rugged terrain will resume Friday.