Daniel Radcliffe plays Harry Potter in the film series
A man is in hospital with serious back injuries after being injured on the set of the latest Harry Potter film.
Paramedics were called to Leavesden Studios near Watford, where Harry Potter and the Deathly Hallows is in pre-production.
The man, in his 20s - who is a stuntman according to press reports - was taken to hospital after Wednesday's accident.
Warner Bros said he was not a member of the cast, and did not comment further "out of respect for his family".
In a statement, the company added: "The person has been taken to hospital and we are awaiting further news."
An East of England Ambulance Service spokesman said: "Paramedics were called to Leavesden Studios... after a man in his 20s sustained a significant back injury.
"He was stabilised at the scene and taken to Watford General Hospital."
The hospital refused to comment on the man's condition, but said he had been transferred to another hospital.