A US-led coalition air strike killed at least 16 civilians in a village north of so-called Islamic State’s Syrian stronghold of Raqqa, activists say. A spokeswoman for the Kurdish-Arab alliance, the Syria Democratic Forces (SDF), dismissed them. “There is no such thing, and any such claims are IS news,” Jihan Sheikh Ahmed told the AFP news agency. The initial report of the air strike on al-Heisha, about 40km (25 miles) north of Raqqa, came from the anti-IS activist group, Raqqa is Being Slaughtered Silently. It said 23 people had been killed and identified all but four of them.