A film about one of the September 11 hijacked airliners is to open New York's Tribeca Film Festival next month.
United 93, which is directed by British film-maker Paul Greengrass is a real-time account of the fourth hijacked airliner, which passengers attempted to retake from their captors. Greengrass's previous films include Bloody Sunday and The Bourne Supremacy.
Tribeca, which runs from April 25 to May 7, was set up by Robert DeNiro after the 9/11 attacks as part of efforts to revitalise the Manhattan economy.
United Airlines flight 93 is believed to have been heading for the White House before it was steered off course after passengers intervened. It eventually crashed in Shanksville, Pennsylvania.
Families of those killed on the plane and support groups for other 9/11 victims will see the film ahead of its screening.
Festival co-founder Jane Rosenthal said: "We are honoured to showcase a film that portrays a story of bravery and sacrifice of the men and women who dedicated their lives that day aboard United Flight 93. "9/11 changed us, in indescribable personal ways, but also by forever altering our downtown community."
This year's festival is the fifth to take place and will feature 250 films. Highlights include Christine Hegedus and Nick Doob's Al Franken: God Spoke, and Claudia Llosa's Madeinusa, which debuted at Sundance recently. The festival's Restored/Rediscovered section will highlight seven films that have been restored or preserved from film archives, and is co-curated by Martin Scorsese and Tribeca head, Peter Scarlet.
United 93 is the first of a number of films to explicitly dramatise the al-Qaida attacks on the US. Oliver Stone's World Trade Center, which follows two New York Port Authority officers who become trapped under the rubble of the Twin Towers, is currently in post-production.
