Jim Broadbent has joined the cast of Steven Spielberg's Indiana Jones 4, which has begun principal photography and will be released by Paramount on May 22, 2008.

It is understood Broadbent will play a mentor figure to Harrison Ford's titular character, along the lines of Dr Marcus Brody played by the late Denholm Elliot in the first and third films.

Recently announced cast members for the fourth instalment include Cate Blanchett, Ray Winstone, John Hurt and Shia LaBeouf.

Frank Marshall returns as producer with Kathleen Kennedy joining George Lucas as executive producer.

Broadbent's credits include Longford, Gangs Of New York, The Chronicles Of Narnia: The Lion, The Witch And The Wardrobe, Bridget Jones's Diary, Hot Fuzz, The Crying Game and Iris, for which he won the Academy Award in 2001.