The UN envoy for Yemen arrived Monday in the Houthi-held capital of Sana'a, after two-day delay for logistic reasons.
At arrival, Envoy Martin Griffiths gave no comments to reporters at Sana'a airport.
Griffiths is expected to discuss with Houthi officials final arrangements for implementing the Hodeida redeployment first phase under Stockholm Agreement.
Head of the Redeployment Coordination Committee (RCC), General Michael Lollesgaard, will also attend the discussions.
Parties to the 4-year war in Yemen, after 8-day peace talks in Sweden, reached on the 13th of last December an agreement providing for ceasefire in Hodeida and redeployment of both sides' forces, exchanging prisoners and alleviating blockade imposed by Houthis on Taiz.
But none of this has taken place so far, with both sides trading blames for trying to thwart the deal.
The port city of Hodeida and its three ports have been under Houthi control since late 2014, while Yemeni joint forces loyal to legitimate government and Arab coalition have massed at the city's fringes since last November seeking to retake the strategic port.
Last week, Griffiths discussed in Muscat with Houthi senior negotiator, Mohamed Abdul Salam, Hodeida pact, setbacks facing its application and proposals to clear such obstacles.
The meeting also addressed the need for accelerated fulfillment of points agreed upon in Jordan on prisoner swap, economic issue and gender participation, according to the Sana'a-based Saba news agency.
Late last month, the UN envoy, via RCC head, handed the Yemeni official government and Houthi rebels a revised plan putting off discussion on the identification of local forces that would take control over areas after troop withdrawal until first phase is finished.