A spokesman for the United Nations Human Rights Council blamed Turkey's mercenaries for the killing of 12 civilians, including 8 children, in Tal Rifaat, northern Syria.
In a statement, UNHCR spokesman Robert Colville said: The bombing by armed groups linked to Turkey near a school in Tal Rifaat has killed at least 12 civilians, including children between the ages of 3 to 15 years.
The spokesman also pointed out that since the cease-fire agreement signed between the United States and Turkey on October 22, UNHCR has recorded of intensifying the attacks by booby trapped vehicles, in populated areas such as residential neighborhoods and crowded markets in al-Hasakah, al-Raqqa and Aleppo.
"This use may amount to indiscriminate attack and a serious violation of international humanitarian law, and constitutes a war crime," he added.
"Countries that support the parties to the conflict, even when they are not taking a direct part in hostilities, are obligated to respect and guarantee international humanitarian law, in all circumstances," Colville concluded.
Civilians lost their lives, and others, mostly children, were wounded in brutal artillery shelling of the Turkish occupation army and its mercenaries on Tal Rifaat on the 2nd of this month.