Man who foiled Nazi nuclear plan dies aged 99

FILE PHOTO: World War Two Norwegian resistance fighter Joachim Roenneberg holds up a Union flag, which had been lowered from above the House of Lords, after it was presented to him by the Clerk of the House of Lords in Westminster, London, April 25, 2013. REUTERS/Andrew Winning/File Photo

OSLO (Reuters) - The leader of a daring World War Two raid to thwart Nazi Germany's nuclear ambitions has died aged 99, Norwegian government officials said on Sunday.

Joachim Roenneberg, serving behind enemy lines in his native Norway during the German occupation, in 1943 blew up a plant producing heavy water, or D2O, a hydrogen-rich substance that was key to the later development of atomic bombs.