A primary school in Yemen was bombed by the Saudi-led coalition on Tuesday, and five people, including two children, were killed, medics told the Middle East Eye.

A rebel group puts the death toll at eight, with 15 wounded, according to AFP.

A military official told AFP that the strike was a “mistake.”

A video posted to social media Tuesday purports to show the bloody aftermath of the bombing. (Warning: video is graphic.)

The U.S.-backed coalition has long been condemned by human rights advocates for killing civilians throughout its nearly two-years-long campaign against rebel Houthi groups. In the past six months alone, the coalition has bombed a funeral, a hospital, and another school.

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The enduring war, which the U.S. still supports by re-fueling coalition planes, has created an ongoing humanitarian crisis—with Oxfam warning in December that the country only has enough food to feed its population for the next several months.