He told parliamentary leaders of political parties that he would soon take them on board about the negotiations.
The procedure, agenda and venue for the talks are being finalised, he added.
The government enjoys the support of all political parties for the initiative and it wants to take the peace process forward with sincerity, Khan said.
Speaking to media after the meeting, Pakistan People's Party leader Khurshid Shah said the talks with the Taliban were delayed due to the killing of Maj Gen Sanaullah Khan Niazi in a roadside bomb attack and the suicide bombing of a church in Peshawar that killed over 80 people.
He said the government had told the political leaders there were 37 to 57 factions of the Taliban operating in the country.
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