The party of Yemen's former president, a main player in the messy, months-old civil war, said in an emailed statement that it accepts a peace plan brokered by the United Nations in talks in Oman.
The General People's Congress is the party of former president Ali Abdullah Saleh, to whom many of the army units fighting alongside the northern Houthi militia against forces backed by Gulf states remain loyal.
"An official source at the General People's Congress reiterated the party's fast position on ending hostilities and raising the blockade and on a peaceful solution to Yemen's crisis," the party said in the statement.
President Abd-Rabbu Mansour Hadi, supported by a Saudi-led military coalition and allied to local militias, has ruled out an agreement until the Houthis and Saleh's forces implement a UN resolution by quitting cities and surrendering arms.