A film crew worker has been stabbed in the throat at a Warner Bros Studio movie set, it has been reported.
The force added a man had later been taken to hospital by ambulance suffering from a neck injury.
A 54-year-old man has been arrested on suspicion of wounding with intent to do grievous bodily harm and “it is believed the two men are known to each other”, the police spokesman said.
It is understood the incident took place on the set of new adaptation of Roald Dahl’s The Witches - which will star Anne Hathaway, according to the Mirror.
“One man sustained a neck injury and was taken to hospital by ambulance.
“A second man, who is 54, was arrested on suspicion of wounding with intent to do grievous bodily harm and is currently in police custody.
“It is believed the men are known to each other. Enquiries are continuing at this time to establish the circumstances around what happened.”
The site has been used for shoots by major US studios and for independent British feature films and TV shows including Star Wars Episode One: The Phantom Menace and the Harry Potter series.