Pakistani government sources tell ABC News they have "credible reports" that Osama bin Laden and his entourage have moved down from high mountainous peaks along the Afghan border to a valley area 40 miles inside the Pakistan border.
The officials say the reports put bin Laden around Kohistan's Kumrat Valley.
Officials said the reports were validated by the release of bin Laden's audio tape yesterday, which appears to have been recorded only two weeks earlier.
Such a quick turn-around suggests, say the officials, that bin Laden is much closer to civilization than he had been previously.
Previous audio and video tapes have taken four to six weeks to become public.