The UN-brokered talks to end the Yemeni conflict started in Kuwait on April 21. The talks ended in early August, with the government and Houthi rebels failing to come to an agreement. As the talks wrapped up, the Houthi delegation flew to Oman for consultation with local authorities. From there, they tried to return to the Yemeni capital Sanaa, but failed over the government ban.
"[They refused to meet the UN envoy] in protest against the refusal of the Arab coalition led by Saudi Arabia to let the Oman plane, on which the delegation had to return to Sanaa more than ten days ago, pass" the source said.
The delegation is still in the Omani capital of Muscat. The UN Envoy is expected to arrive there on Sunday, the source added.
Since March 2015, the Saudi-led coalition of mostly Persian Gulf countries has been carrying out airstrikes against the Houthis at Hadi's request despite a ceasefire agreed shortly before.
In early August, the UN envoy anticipated that the sides would return to the negotiating table no sooner than in a month. As hostilities intensified in Yemen, the rebels formed the Supreme Political Council, an executive body, with a prospect of ruling the country.