Taliban spokesman Suhail Shaheen said Mullah Abdul Ghani Baradar, a co-founder of the Taliban and head of their political office in Qatar, will lead the 11-member delegation during talks with Pakistani officials in Islamabad.
The official, who spoke on condition of anonymity because he was not authorized to speak to the media, said Khalilzad is not in Islamabad to resume the peace process.
Rather the U.S. peace envoy will follow up on discussions he held with Pakistani leaders, including Prime Minister Imran Khan, during the U.N. General Assembly session in New York.
It wasn't immediately known if Khalilzad will meet with Taliban leader Baradar. The two men held several one-on-one meetings during the many rounds of negotiations held in the Middle Eastern state of Qatar where the Taliban maintain a political office.
Trump ended peace talks after a series of Taliban attacks on the capital Kabul, including one in which a U.S. soldier was killed.
Neither Pakistan's Foreign Ministry nor the military would comment on the Taliban and Khalilzad visits.
Over the past year, the Afghan government was sidelined in the U.S.-Taliban talks with the Taliban refusing to negotiate with Kabul officials as they consider the Afghan government a U.S. puppet. Meanwhile, Taliban attacks have continued unabated, even as Afghanistan held presidential elections Saturday, and weeks after the U.S.-led peace talks collapsed.
Saturday's vote was marred by violence, Taliban threats and widespread allegations of mismanagement and abuse. It was the fourth time Afghans have gone to the polls to elect a president since 2001 when the U.S.-led coalition ousted the Taliban regime.
Gannon reported from Kabul, Afghanistan