Khalid Shaikh Mohammed, the lieutenant of Al Qaeda captured in Pakistan nine days ago, told interrogators that he met with Osama bin Laden in December but refused to describe the location, Pakistan’s top intelligence officials said tonight in the first detailed, official account of the arrest and questioning of Mr. Mohammed. “He confirmed he met him in December,” one official said. “But I don’t believe him unless he tells us the location and gives us witnesses.” Other Pakistani security officials have said that Mr. Mohammed, described by American experts as a mastermind of the Sept. 11 attacks, met with Mr. bin Laden as recently as last month. The intelligence officials said another Qaeda member, whom they refused to identify, had told interrogators that he met Mr. bin Laden in September and December in a mountainous region. They said the location appeared to be in Afghanistan. Full Story