A roadside bomb killed the governor of the southern Muthanna province on Monday, police said, the second assassination of a top provincial official in just over a week. The blast struck the convoy carrying Mohammed Ali al-Hassani at about 9 a.m., killing him and three other people, a police officer said, speaking on condition of anonymity because he wasn't authorized to release the information. Al-Hassani's office manager and two guards also were seriously wounded, police was quoted as saying by the Associated Press.