UN envoy to Yemen Ismail Ould Cheikh Ahmed has revealed that the Houthi militants and the General People's Congress, the party of the former president, agreed to implement the UN resolution 2216.
Cheikh's statement posted on his Facebook page on Tuesday came shortly after bombings on the hotel where the government is staying and headquarters of troops from the Saudi-led coalition guarding it in Aden.
ISIL claimed responsibility for the bombings that coincided with ongoing battles between the Yemeni and coalition forces and the Houthi militants in the cities of Marib and Taiz.
Cheikh has held talks with representatives from the two factions in Oman's capital Muscat in recent months.
In September, well-informed sources said Cheikh and the Houthis and the GPC agreed on terms in order to end the conflict and resume the political process.
The terms included acceptance of the two factions to adhere to the resolution 2216, permanent ceasefire, the government returns to Sanaa to assume its duties officially from the capital and lifting the several-months blockade on all Yemeni sea, land and air ports.
However, the warring parties, the government backed by the coalition and the Houthis backed by forces loyal to the GPC, have since failed to agree on a mechanism to implement the terms.
The latest statement of Cheikh Tuesday did not include details.
The resolution 2216 approved in April called on the Houthis to cede power, withdraw from cities and return weapons they seized after ousting the government in late 2014.
Moreover, it urged them to come back to the political process without preconditions and that they stop threatening neighbors of Yemen.