Iraqi forces have been handed control of security in the province of Babil, south of Baghdad, by the US military.
It is the twelfth of Iraq’s 18 provinces to be handed back to Iraqis.
The handover on Thursday came just two days after clashes in the mainly Shia province killed at least 15 people and scores more wounded.
Babil had been the forefront of sectarian violence, including a suicide attack in Hilla, the provincial capital, in March 2007 that left more than 100 Shia pilgrims dead.
The previous province transferred to Iraqi security control was Anbar - once the centre of Iraq’s Sunni revolt - which was handed back in September.