The latest incidents bring to a total of four bomb-making sites that the U.S. has shared with Pakistan only to have the terrorist suspects flee before the Pakistani military arrived later. The report does not bode well for attempts by both sides to mend relations and rebuild trust after the U.S. raid on May 2 that killed Osama bin Laden in Abbottabad, a Pakistani army town only 35 miles from the capital Islamabad. The Pakistanis believe the Americans violated their sovereignty by keeping them in the dark about the raid. American officials believe bin Laden's location proves some elements of the Pakistani army or intelligence service helped hide the al-Qaida mastermind.
The U.S. officials explained Saturday how they first offered the location of the third, and then the fourth site, in order to give Pakistan another chance to prove it could be trusted to go after the militants.
In the tradition of "trust but verify," the Americans carefully monitored the area with satellite and unmanned drones, to see what would happen, after sharing the information a third and fourth time, the officials said.
In each case, they watched the militants depart within 24 hours, taking any weapons or bomb-making materials with them, just as militants had done the first two times. Only then did they watch the Pakistani military visit each site when the terror suspects and their wares were long gone, the officials said.
Pakistan's army on Friday disputed reports that its security forces had tipped off insurgents at bomb-making factories after getting intelligence about the sites from the United States. The army called the assertions of collusion with militants "totally false and malicious."
Army officials further claimed they had successfully raided two more sites, after finding nothing at the first two, but a Pakistani official reached Friday offered no details of what they found there. The official admitted that in each raid, however, the Pakistani security services notified the local elders who hold sway in the tribal regions.
Two U.S. officials said they were asking the Pakistanis to withhold such sensitive information from the elders, and even their lower ranks, to prove they could be trusted to keep a secret, and go after U.S. enemies. At least two of the sites were run by the Haqqani network, which is part of the Taliban, closely allied with al-Qaida, and blamed for some of the deadliest attacks against U.S. troops and civilians in neighboring Afghanistan.