'Caliphate capital' Raqqa 'liberated' from Islamic States militants

Combing operations are under way to clear the city of land mines and extremist sleeper cells, a commander with US-backed Syrian forces has said.

The Syrian city of Raqqa has been liberated from Islamic State militants, a commander with US-backed Syrian forces has said.

The commander added that combing operations are under way to clear the city of land mines and extremist sleeper cells,.