Movies
David Holmes was taken to hospital with a back injury after reportedly falling to the ground on set when a planned aerial stunt went wrong.
Holmes's family said in a statement that they are "trusting in the expertise of the medical staff".
The 25-year-old, who doubles for the film's star Daniel Radcliffe, was working at Leavesden Studios, near Watford, where Harry Potter And The Deathly Hallows is currently in pre-production.
"We would like to thank everyone for their thoughts and prayers. We are trusting in the expertise of the medical staff," the family's statement read.
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