'Nuclear hellstorm' if bin Laden caught: 9/11 mastermind

The mastermind of the 9/11 attacks warned that Al-Qaeda has hidden a nuclear bomb in Europe that will unleash a "nuclear hellstorm" if Osama bin Laden is captured, leaked files revealed on Monday.

Khalid Sheikh Mohammed told Guantanamo Bay interrogators the terror group would detonate the device if the Al-Qaeda chief was captured or killed, acording to the classified files released by the WikiLeaks website.

Sheikh Mohammed, the self-professed mastermind of the September 11, 2001 attacks on the United States, has been held at Guantanamo since 2006 and is to be tried in a military court at the US naval base on Cuba over the attacks.

His nuclear threat was revealed in Britain's Daily Telegraph newspaper, one of several media outlets which have published the classified assessments of detainees at Guantanamo.

Sheikh Mohammed, captured in 2003 in Pakistan, also claims to have personally beheaded US journalist Daniel Pearl in 2002 with his "blessed right hand" and to have helped in the 1993 World Trade Center bombing that killed six people.

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