A delegation of Houthi rebels and their allies loyal to former Yemeni President Ali Abdullah Saleh has been stuck in Oman since August where it went after failed peace talks with the Yemeni government hosted by Kuwait.
"The forces of the Arab coalition will allow a private UN plane to bring the delegation of Ansar Allah and [president Saleh’s] General People’s Congress party from Oman's capital to Sanaa after more than 40 days after the initial ban," the source said.
He added that permission was granted only to members of the delegation and excluded journalists.
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.