MUMBAI: The release of alien attack thriller The Darkest Hour has been postponed to a 23 December release. The film that was to release on 5 August is said to be the first American 3D production to have been shot in Russia.

Produced by Tom Jacobson and Timur Bekmambetov, the Summit Entertainment film directed by Chris Gorak is the story of five young Americans who find themselves stranded in Moscow, fighting to survive after extratrerrestials taking an aim at Earth.

The Darkest Hour stars Olivia Thirlby and Emile Hirsch, along with prominent Russian actors Gosha Kutsenko, Dato Bakhtadze, Nikolai Yefremov and Arthur Smolyaninov.