Russian special forces kill Islamic State-linked hostage-takers

Men linked to militant group took two guards hostage at facility in southern city of Rostov

Russian special forces have freed two guards and killed six men linked to Islamic State who had taken them hostage at a detention centre in the southern city of Rostov, the prison service said.

State media said that some of the men had been convicted of terrorism offences and were accused of affiliation with IS, which claimed responsibility for a deadly attack on a Moscow concert hall in March.