DUBAI (AFP) - A missile hit a health centre operated by Doctors Without Borders (MSF) in northern Yemen on Sunday (Jan 10), killing three people and wounding 10 others, the aid agency's spokesman said.

The missile struck the medical facility in the Razeh district of Saada province, according to communications officer Malak Shaher.

She said MSF could not specify whether the centre was hit in an air strike by the Saudi-led coalition or by a rocket fired from the ground.

Saada is the heartland of the Iran-backed Shi'ite Houthi rebels that the coalition has been bombing since March in support of Yemen's beleaguered government.

MSF last month accused the coalition of bombing its clinic in Taez, south-west Yemen, where nine people were wounded including two agency staff.

The coalition said at the time that it would investigate MSF's claim.

The UN envoy for Yemen Ismail Ould Cheikh Ahmed arrived on Sunday in Sana'a in a bid to convince the rebels and their allies to attend fresh peace talks slated for next week.

But Foreign Minister Abdel Malak al-Mekhlafi told AFP on Saturday that the talks will not take place until Jan 20 at the earliest.

The government met the rebels and their allies in Switzerland last month for six days of talks that ended with no major breakthrough.

In Yemen's second city of Aden, intelligence colonel Ali Saleh al-Nakhibi was shot dead by unknown gunmen on Sunday, a security official said.

More than 5,800 people have been killed in Yemen since March, about half of them civilians, according to the United Nations.