UK's Channel 4 has cited concerns over security as the reason for cancelling a planned screening at its headquarters this week of a documentary film questioning the origins of Islam.
Islam: The Untold Story, which claimed there was little written contemporary evidence about the origin of the religion, sparked more than 1,000 complaints to Channel 4 and the media regulator after it was broadcast two weeks ago.
Its presenter, the historian Tom Holland, was also the focus of substantial abuse on Twitter.
The channel said in a statement on Tuesday: "Having taken security advice, we have reluctantly cancelled a planned screening of the programme, Islam: The Untold Story. We remain extremely proud of the film, which is still available to view on 4oD."
A police spokesperson said the force had no knowledge of the event or the decision to cancel it.
However, sources close to the channel said the screening had been cancelled after advice was taken from "relevant security authorities".