Sanaa, January 11 (RHC)-- In Yemen, at least five people have been killed and 10 others wounded after a projectile hit a Doctors Without Borders (MSF) hospital.

The aid group says it cannot confirm the origin of the attack, but that planes were flying over the hospital at the time.

Teresa Sancristóval of Doctors Without Borders spoke out after the attack. She told reporters: "For this hospital, it’s the third time that it’s attacked. And for MSF, it’s the third time that we are attacked, in general, as a medical facility."

At least 70 Yemeni health clinics have been damaged or destroyed since the U.S.-backed, Saudi-led coalition began bombing Houthi rebels in March. Doctors Without Borders says it regularly provides all warring parties including the Saudi coalition, with its hospitals’ GPS coordinates.