Fierce fighting between Iraqi police and Sunni-Arab insurgents erupted in downtown Baqouba, the capital of Diyala Province, for a second day on Sunday, an official said. At least 11 suspected militants were killed, the police official said on condition of anonymity, as Iraqi security forces often do in an area subjected to widespread fighting and revenge killings. Few details were immediately available about the clashes, but during Saturday's fighting police killed at least 36 insurgents and wounded dozens after scores of militants armed with assault rifles and rocket-propelled grenades attacked government buildings in the center of the city, police said. The fighting raged for hours in Baqouba, which is 60 kilometers (35 miles) northeast of Baghdad. Iraqi police have reported no casualties.