Three people have been killed in the Grand Canyon after a tour helicopter crashed.
Authorities say six passengers and a pilot were on board at the time.
Four others are hurt.
An investigation into what caused the crash is underway.
UPDATE#2: Another image from wreckage of tour helicopter crash in Grand Canyon. Pic courtesy Teddy Fujimoto. @News3LV pic.twitter.com/oyuxxq9HoO
— Gerard Ramalho (@GerardNews3LV) February 11, 2018
