At least 39 civilians, including eight children and eight women, have been killed by Russian air strikes in Syria over the past four days, the Syrian Observatory for Human Rights said, on Saturday.
It said 14 fighters had been killed - 12 from the Islamic State militant group around the eastern city of Raqqa, and two from the Al Qaeda-linked Nusra Front.
Observatory director Rami Abdulrahman said the figures only included those which had been verified.