Armed militants have raided government buildings in the Iraqi city of Kirkuk.

Iraqi media said suicide bombers had attacked police stations and a power plant, but that security forces repelled fighters.

The so-called Islamic State group said it was behind the attack, with its fighters breaking into the town hall and taking control of a hotel.

It comes as Iraqi government-led forces attempt to retake the IS stronghold of Mosul.

A curfew has been imposed in Kirkuk "until further notice", Iraqi media said.

The Beirut-based newspaper Al-Sumaria reported that after the dawn attack, police had killed one suicide bomber but three others blew themselves up.

A district police chief, Brig Gen Sarhad Qadir, told the paper that the situation was under control.