BEIRUT — Syrian opposition activist groups say airstrikes kill at least 17 people just south of the northern city of Raqqa, the de facto capital of the Islamic State group.
The Britain-based Syrian Observatory for Human Rights says 18 people are killed in the airstrikes on the road between the villages of Ratla and Kasrat. It says Sunday’s airstrikes hit buses, adding that the identity of the dead is not known.
The activist-operated Raqqa Is Being Slaughtered Silently says 17 civilians are killed in the airstrike on buses carrying civilians.
Both groups blame the US-led coalition, which has been carrying out airstrikes in Syria against IS since September 2014.
US-backed Syrian fighters have been marching toward Raqqa for weeks under the cover of coalition airstrikes.