Filming of Jim Sheridan's H-Block escape thriller has been postponed as financing has not materialised but producers are said to be confident that this is just a temporary glitch and that they will be able to secure funding.
Cillian Murphy and Jamie Dornan are to star in H-Block, which tells the true story of 1983 Maze Prison breakout with Pierce Brosnan to play a prison officer.
38 IRA prisoners escaped from HMP Maze near Belfast in September 1983. One prison officer died from a heart attack after being stabbed and another was seriously injured.
Murphy and Dornan have previously worked together on another true story, the WWII thriller Anthropoid last year.
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The film chronicled the plot to kill SS head Reinhard Heydrich, who was known as "The Butcher of Prague", adn who was also the right-hand man to Heinrich Himmler and Adolf Hitler.
H-Block will mark the first time the actors have worked with six-time Oscar nominee Sheridan, whose other credits include My Left Foot, In the Name of the Father, and The Boxer.
Sheridan's last film, The Secret Scripture - an adaptation of the Sebastian Barry book of the same name - was released earlier this year.
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Deadline magazine reported that he is working on a "shooting script" for H-Block with Nic Sheff, whose credits include the controversial teen series 13 Reasons Why. The original script for H-Block was written by Tony Devlin and Gavin McCloskey.
Another film about the Maze escape, starring Love/Hate's Tom Vaughan-Lawlor and Rebellion's Barry Ward, was filmed in the decommissioned Cork Prison last year.
Titled Maze, it is written and directed by award-winning director Stephen Burke and is due for release in January 2018.
Murphy is currently on cinema screens in Christopher Nolan's WWII film Dunkirk, which also stars Love/Hate's Barry Keoghan and singer Harry Styles.
Dornan has also been working on the adventure movie Robin Hood in which he plays Will Scarlet opposite Taron Egerton's titular hero.
