Surprise attack by Islamic State kills at least 21 in Syria

Islamic State militants have staged a surprise attack in north-eastern Syria, killing at least 21 people, many of them civilians who had fled fighting in areas of Syria and Iraq held by the extremist group, Kurdish officials said.

The attack took place after militants entered the village of Rajm Sleibi, on the front line between the Kurdish-controlled Hassakeh province and IS-held areas further south.