ISLAMABAD: A second round of peace talks between the Afghan government and Taliban militants due to be held in Pakistan have been postponed amid reports of the Afghan Taliban leader Mullah Omar's death, the Pakistani foreign office said today.

"In view of the reports regarding the death of Mullah Omar and the resulting uncertainty, and at the request of the Afghan Taliban leadership, the second round of Afghan peace talks, which was scheduled to be held in Pakistan on 31 July 2015, is being postponed," the statement said.

Pakistan was the expected venue for the meeting, due to take place on Friday, where Afghan officials had pledged to press the insurgents for a ceasefire.

"Pakistan and other friendly countries of Afghanistan hope that the Taliban leadership will stay engaged in the process of peace talks in order to promote a lasting peace in Afghanistan," the statement said.