Medecins Sans Frontieres (MSF) says one of its hospitals in northern Yemen has been destroyed by several air strikes.

The first, which occurred around 22:30 (19:30 GMT) on Monday, hit part of the facility in Saada province that was not being used, according to the charity.

All staff and patients had been evacuated by the time the second strike hit about 10 minutes later.

There has been no comment so far from the Saudi-led coalition battling the Houthi rebel movement in Yemen.

The conflict has left more than 5,600 people dead, including 2,615 civilians, since late March.

About two thirds of the civilian deaths were caused by coalition air strikes, and the rest by the rebels and their allies, the Office of the UN High Commissioner for Human Rights (OHCHR) said on Tuesday.

'War crime'

More than 15,000 people wounded in air strikes and fighting on the ground have been treated in MSF-supported hospitals in the past seven months.

The charity's hospital in Saada's Haydan district served 200,000 people and was the only-life saving facility in the region, receiving 150 emergency cases a week.

An MSF statement said that all staff on duty and two inpatients managed to escape between the first and second air strikes on Monday night.

The facility's director was slightly injured during the evacuation.

After visiting the site on Tuesday morning, MSF's project co-ordinator in Saada, Miriam Czech, said: "I was not able to go inside as we believed there were remaining bombs that have not exploded, but I can confirm that the facility is 99% destroyed."

The facility's director said that only the x-ray department and staffroom remained.

"It could be a mistake, but the fact of the matter is it's a war crime," MSF country director Hassan Boucenine told the Reuters news agency.

"There's no reason to target a hospital. We provided [the coalition] with all of our GPS co-ordinates about two weeks ago," he added.

This is the second attack this month on an MSF facility.

On 3 October, US aircraft bombed a hospital in the Afghan city of Kunduz, killing at least 22 people.

MSF has demanded an independent international investigation into the bombing, which it says was a war crime. The US has said the hospital was bombed by mistake and President Barack Obama has apologised.

(BBC)