A man has died of injuries he suffered in a Grand Canyon helicopter crash which also killed three other Britons.
Jonathan Udall, 32, is understood to have been on honeymoon with Ellie Milward, 29, touring the Arizona attraction on an Airbus EC130 B4 when it crashed just before sunset on Saturday February 10.
The pair were being treated in hospital in America for critical injuries, alongside Jennifer Barham, 39, and pilot Scott Booth, 42.
More than £21,000 has been raised for Mr Udall and Ms Milward who were on their honeymoon at the time, according to a JustGiving crowdfunding webpage.
Chris Tucker, who set up the page, wrote on Thursday: "It is with a very heavy heart that I must type this.
"Our good friend Jon Udall has succumb to his injuries.
"He was strong, brave and I will never forget him. I will update this page when possible. Ellie is critical and is continuing to fight. "
Becky Dobson, 27, her boyfriend Stuart Hill, 30, and his brother Jason Hill, 32, all died in the accident.
The three, who are originally from Worthing, West Sussex, died from multiple injuries, Mohave County Medical Examiner's Office said.
They had been celebrating Stuart Hill's 30th birthday with a trip to Las Vegas.
Hundreds of mourners attended a memorial service in Worthing to pay tribute to the victims last week.
Seven candles were lit - three of which were purple in memory of those who died and four white symbols of hope for the survivors still in hospital.
The helicopter crashed on tribal land in a section of the Grand Canyon outside of the national park where air tours are not as highly regulated.
The cause of the crash is being investigated by the National Transportation Safety Board.
Investigators will interview witnesses, survivors, the helicopter operator and manufacturer and others before issuing a full report in at least a year's time.
Preliminary findings are expected before the end of the month.
Following the crash, a Foreign Office spokeswoman said: "We are providing support to the families of six British visitors involved in a helicopter accident at the Grand Canyon on February 10, and we are in close contact with the US emergency services."