U.S. and South Korean defense officials have said they've seen nothing to indicate that Pyongyang is preparing for a major military action, and there was no sign of an exodus of foreign companies or tourists from South Korea.

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Although there was no sign of any fire following an inspection by the airport's crew the squad were forced to continue the rest of the journey home by coach at 0135 GMT.

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There was also no sign on Tuesday of an accord on another issue at the conference -- African demands that former slave states make a formal apology for some 400 years of human trafficking up to the early 19th century, during which some 12 million people where shipped in chains to the Americas.

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There was also no sign of a crater typically left by an explosive device, he added.

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An European Union report found there was "no sign whatsoever" of any extra sex workers and that business was even reported to be down in many brothels.

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