The operation that killed bin Laden plunged an already strained relationship between the CIA and Pakistan's main intelligence agency, the ISI, to new lows and threatened cooperation that is key to the U.S. fight against al-Qaida and Taliban militants battling foreign troops in Afghanistan.
The U.S. also needs Pakistan's help to help promote and guide negotiations with the Taliban that can help end the decade-long Afghan war. Pakistan and Afghanistan inaugurated a joint peace commission Saturday during a visit by Afghan President Hamid Karzai.
In an attempt to rebuild their relationship, Washington and Islamabad have agreed to form a joint intelligence team to track down militant targets inside Pakistan, drawing in part from the trove of records taken from bin Laden's personal office during the raid.
Panetta and Pakistani officials planned to discuss what U.S. intelligence officers will be permitted to do, and how many will be allowed into the country, as part of the team, said a Pakistani official, speaking on condition of anonymity because of the sensitivity of the issue.
But new suspicions have marred this attempt at renewed cooperation.
As an act of faith to restore relations with the Pakistanis, U.S. intelligence shared the suspected location of explosive material held by the al-Qaida-linked Haqqani network at two compounds in the Pakistani tribal areas, according to a Pakistani and a U.S. official.
The U.S. official said that after the intelligence was shared, the explosive material was moved. The Pakistani official told The Associated Press that they checked out the locations, but nothing was there, and that they intend to investigate to dispel U.S. suspicions that the Pakistani intelligence service had tipped off the militants.
Both officials spoke on condition of anonymity to discuss intelligence operations.
Panetta's visit is his first to Pakistan since the covert U.S. Navy SEAL raid that killed bin Laden in a Pakistani army town not far from the capital on May 2. On Friday, Panetta dined with army chief Gen. Ashfaq Parvez Kayani and the head of the country's main spy agency, Lt. Gen. Ahmed Shuja Pasha.
The bin Laden operation triggered an angry backlash from the Pakistani military, which is upset that the U.S. didn't inform it beforehand. Pakistan has sent home most of the U.S. Army trainers in the country, and the military said Thursday that billions of dollars in American aid meant to help it combat militants should instead be used to bolster Pakistan's economy.