The Britain-based Syrian Observatory for Human Rights has accused the U.S.-led coalition of killing 64 civilians in airstrikes on a Syrian village controlled by the self-proclaimed Islamic State. The group said 31 children were among those killed late last week near the northern city of Kobani in Aleppo province, marking what it called the worst civilian loss from a single attack since the United States launched its campaign against ISIL. The Pentagon says it is still assessing whether it should open an investigation, but denied there was any information to suggest civilians were killed. This comes as Amnesty International has released a new report saying Syrian civilians in Aleppo province are “being subjected to appalling human rights violations” by both the Syrian government and many opposition groups.