There have been fierce clashes between Kurdish and Iraqi troops north of Kirkuk city, days after the Iraqi army took control of disputed areas.

A BBC correspondent at the scene said there had been rocket, artillery and machine-gun fire in Alton Kupri.

The district is the last area in Kirkuk province still held by Kurdish Peshmerga fighters.

Iraqi forces have this week taken over swathes of territory which had been held by the Kurds since 2014.