The HRW said in a report on Tuesday that the killings took place on October 17 in the villages of Hud and Lazzagah, located about 50 kilometers south of Mosul. In total, Daesh "summarily executed at least 13 people including two boys."

Iraqi forces closed in on the city on October 17. In the meantime, the HRW said, some 30 Iraqi villagers attacked the terrorists and killed 19 of them, the New York-based rights group added.

The international rights group confirmed that Daesh began the execution-style killings in the afternoon of October 17, leaving bodies of civilians lying in the streets.

Iraqi government forces entered Lazzagah that evening and Hud the next morning.

Lama Fakih, the deputy Middle East director at the HRW, said the civilians were executed after villagers rose up against them in the region.

ISIS "responded to the village uprising by unlawfully executing people captured in the uprising and civilians who weren't involved," Fakih said.

Elsewhere in her remarks, she urged Iraqi government forces that capture Daesh terrorists to "properly investigate their participation in alleged war crimes like these."

The report also includes the picture of one of the slain boys who had not been involved in the uprising.

Iraqi troops, supported by fighters from Hashd al-Sha’abi and Kurdish Peshmerga forces, are engaged in a joint operation since October 17 to retake Mosul.

The HRW recently said ISIS were deliberately targeting civilians in Mosul who declined to join their ranks, Press TV reported.

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