Three British holidaymakers died when a helicopter crashed in the Grand Canyon.
US police named them as Becky Dobson, 27, Jason Hill, 32, and Stuart Hill, 30.
Three other Britons, Ellie Milward, 29, Jonathan Udall, 32, and Jennifer Barham, 39 along with the pilot Scott Booth, 42, were injured in the crash on Saturday.
The Papillon Airways helicopter came down at about 5.20pm local time in Arizona.
Rescue crews battled against winds of up to 50mph, darkness and rugged terrain to reach the wreckage, The Times reported.
The survivors were rescued at 2am local time on Sunday and airlifted to University Medical Centre in Las Vegas.
The circumstances surrounding the crash near the Quartermaster Canyon, about 60 miles north-west of Peach Springs, are currently unknown.
Brenda Halvorson, chief executive of the Papillon Group, said: “It is with extreme sadness we extend our heartfelt sympathy to the families involved in this accident. We are co-operating fully with National Transportation Safety Board investigators and local authorities.”
On its website, Papillon calls itself “the world’s largest aerial sightseeing company” and says it flies more than 600,000 people a year on a fleet of 48 helicopters an fixed wing aircraft.
The company offers air tours of the Grand Canyon South Rim, Grand Canyon West, Las Vegas, Sedona, Flagstaff, Phoenix and Scottsdale.
A Foreign and Commonwealth Office spokeswoman said: “We are providing support to the families of six British visitors involved in a helicopter accident at the Grand Canyon and we are in close contact with the US emergency services.”