One person is killed and at least four are injured after a blast at the southern French nuclear site of Marcoule but there have been no leaks, officials say.

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Explosion at French nuclear site

Five men held after being arrested close to the Sellafield nuclear site under the Terrorism Act have been released without charge.

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Sellafield terror suspects freed

Five men from London are being held under the Terrorism Act after being arrested close to the Sellafield nuclear site in Cumbria, police say.

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Terror arrests near to Sellafield

New satellite images of a North Korean nuclear site and a recent visit to the North by two American experts suggest that Pyongyang has started work on a new reactor.

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N. Korea Seen Working on New Reactor

The operators of the Dounreay nuclear site could face prosecution over a radiation leak last year that affected a group of workers.

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Dounreay facing action over leak