AKIPRESS.COM - A Saudi-led coalition air strike hit a hospital operated by Medecins Sans Frontieres in northern Yemen on Monday, killing at least 11 people and wounding 19, the aid group said, Reuters said.

A Reuters witness at the scene of the attack in the Abs district of Hajja province said medics could not immediately evacuate the wounded because war planes continued to fly over the area and emergency workers feared more bombings.

"The location of the hospital was well known, and the hospital's GPS coordinates were repeatedly shared with all parties to the conflict, including the Saudi-led coalition," the aid group also known as Doctors Without Borders, said in a statement.

It said one of its staff members was among those killed when an aerial bomb hit the hospital compound, also killing 10 patients.

"This is the fourth attack against an MSF facility in less than 12 months," the statement said.

"Even with the recent United Nations resolution calling for an end to attacks on medical facilities and high-level declarations of commitment to international humanitarian law, nothing seems to be done to make parties involved in the conflict in Yemen to respect medical staff and patients."