Sunni Islamist insurgents who control large parts of northern Iraq attacked a town north of Baghdad early on Sunday, seizing local government buildings, police and witnesses said.

They said militants in 50 to 60 vehicles stormed the town of Dhuluiya, about 70 km (45 miles) north of Baghdad at 3.30 am (8.30 p.m. EDT Saturday), taking the mayor’s office and municipal council building and fighting to take control of the police station.

Insurgents led by the al Qaeda offshoot Islamic State seized swathes of Iraq’s northern and western Sunni Muslim provinces in a two-day offensive last month. […]