KABUL — A top Afghan negotiator said Tuesday that he hopes eight Taliban members freed by Pakistan will serve as peace mediators, describing Islamabad’s move as a major step forward for Kabul’s effort to enlist its neighbor’s help in negotiating an end to its 11-year war.

The eight released Monday include the Taliban’s justice minister when the militants ruled Afghanistan before their 2001 overthrow, as well as a onetime guard of Taliban leader Mullah Omar. It was the second group of prisoners released by Pakistan.