An MSF supported hospital has been hit by a projectile in northern Yemen causing at least four deaths and 10 injuries and the collapse of several buildings of the medical facility.
Three of the injured were Medecins Sans Frontieres (MSF) staff, and two were in critical condition, said a statement from MSF or Doctors Without Frontiers.
According to MSF staff on the ground, one projectile imacted the Shiara Hospital in Razeh district where the MSF had been working since November 2015.
MSF said it cannot confirm the origin of the attack, but planes were seen flying over the facility at the time.
At least one more projectile fell near the hospital. The numbers of casualties could rise as there could still be people trapped in the rubble, it said.
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All staff and patients have been evacuated and patients were being transferred to the Al Goumoury hospital in Saada, also supported by MSF, it said.
"All warrying parties, including the Saudi led coalition (SLC), are regularly informed of the GPS coordinates of the medical sites where MSF works and we are in constant dialogue with them to ensure that they understand the severity of the humanitarian consequences of the conflict and the need to respect the provision of medical services", said Raquel Ayora, Director of Operations of MSF.
"There is no way that anyone with the capacity to carry out an airstrike or launch a rocket would not have known that the Shiara Hospital was a functioning health facility providing critical services and supported by MSF.
"We reiterate to all parties to the conflict that patients and medical facilities must be respected and that bombing hospitals is a violation of international humanitarian"law", said Ayora.
This is the third severe incident in an MSF health facility in the last three months.
On October 27, Haydan Hospital was destroyed by an airstrike by the SLC. On December 3, a health centre in Taiz was also hit by the SLC, wounding nine people.