Griffiths is set to offer a new plan for implementing the first phase of Stockholm Agreement at the Hodeidah port city, a source close to the rebel group told Xinhua on condition of anonymity, reports Xinhua news agency.
The plan detailed the operational steps of military redeployment and withdrawal of the rebels from the port city, the source said without elaborating further.
Saudi Arabia-led military coalition intervened in Yemen in March 2015 to support the government of President Abd-Rabbu Mansour Hadi after Houthi rebels forced him into exile and seized much of the country's north, including the capital Sanaa.
Yemeni warring parties reached a peace deal in December last year in Stockholm as a first step toward a comprehensive political solution. However, the deal has hit a deadlock as the warring forces have largely held the cease-fire deal but failed to withdraw from the city.
Grinding into fifth year, the war has so far killed more than 10,000, displaced three million and pushed more than 20 million Yemenis into the brink of famine, according to the UN aid agencies.
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