U.S. special representative for peace in Afghanistan, Zalmay Khalilzad, will resume peace talks with the Taliban soon, sources with knowledge of the issue said on Wednesday.

Khalilzad, who has since late last year held eight round of talks with the Taliban to end the 18-year war in Afghanistan, is scheduled to travel to Qatar's capital, Doha, from Kabul, via Pakistan.

"I'm off to Doha, with a stop in Islamabad. In Doha, if the Taliban do their part, we will do ours, and conclude the agreement we have been working on," said Khalilzad on Twitter.

Two sources privy to the talks said they could conclude with an agreement on the withdrawal of foreign forces and security guarantees by the Taliban.