A former Afghan official said the meeting in Kabul included an ex-Taliban governor, Maulvi Abdul Kabir. He comes from the same Zadran tribe as the leaders of the Haqqani network, an autonomous wing of the Taliban responsible for many attacks against U.S. and Afghan forces, the former official said over the weekend.

U.S. and Afghan officials hope that if Kabir agrees to quit the insurgency, it could split the Zadran tribe and undercut the pool of recruits from which the Haqqanis currently draw fighters. But it was unclear whether any progress toward that end was made during the talks.

Weakening the Haqqanis' grip over the Zadran tribe could help shift the power balance in eastern provinces where the network poses a major threat. The Haqqani network, led by ailing Jalaluddin Haqqani and his son Sirajuddin, is believed to be sheltering top al-Qaida leaders .

Kabir served as governor of Nangarhar province and deputy prime minister during the Taliban rule, which ended with the U.S.-led invasion of 2001.The two other Taliban who took part in the talks were Mullah Sadre Azam and Anwar-ul-Haq Mujahed.

Mujahed is credited with helping Osama bin Laden escape the U.S. assault on Tora Bora in 2001, the former official said.

The U.S. earlier this month acknowledged facilitating some Taliban trips to Kabul but provided no specifics. The Pakistani military has not commented on such reports

The former Afghan official, who asked not to be named because of his relationship with both the government and the Taliban, described Kabir and his associates as "midlevel" contacts because they have little, if any influence over more powerful Taliban factions.

A Western official confirmed a meeting had taken place but said he did not know who attended and whether progress was made. He spoke on condition of anonymity because he was not supposed to talk to media about the issue.