US has secret plans to safeguard Pakistan's nukes

US, The United States has secret contingency plans to safeguard Pakistani nuclear weapons if they risk falling into the wrong hands, the Washington Post reported Sunday.

But US officials worry their limited knowledge about the location of the arsenal could pose a problem, it said, a week after Pakistani President Pervez Musharraf declared a state of emergency.

"We can't say with absolute certainty that we know where they all are," one unidentified former US official told the newspaper, adding that any US effort to secure Pakistan's nuclear arsenal "could be very messy."