DAKAR, Senegal — In the video, a man in a military uniform leads a woman down a dirt road, smacking her in the head several times as she holds a little girl’s hand and stumbles along. Another woman trails them with an infant strapped to her back. The group is blindfolded and made to sit on the ground.

Armed uniformed men raise their weapons and fire.

“The girl is still breathing,” someone says after the shooters pause, and one walks over to the limp bodies.

A uniformed man approaches the girl and fires again.

This graphic video, which has circulated on social media in recent days, appears to show soldiers in Cameroon executing two women, a child and baby on suspicion of being affiliated with Boko Haram. It has drawn outrage from human rights advocates and riled secessionist groups that have taken up arms in English-speaking areas of the country and say that they, too, have suffered abuses at the hands of the military.

On Wednesday, the United Nation’s high commissioner for human rights expressed alarm at continuing violence in Cameroon, saying he was “utterly appalled” by the horrific video.