BAGHDAD (AP) — U.S.-led coalition airstrikes against the Islamic State group and other extremists in Syria have killed more than 860 people, including civilians, since they began in mid-September, a monitoring group said Wednesday.

The Britain-based Syrian Observatory for Human Rights said the vast majority of those killed — 746 people — were Islamic State militants, while another 68 were members of al-Qaida's Syrian affiliate known as the Nusra Front. At least 50 civilians, including eight children and five women, also have been killed in the airstrikes, the group said.