The governor of Iraq’s restive Diyala province was wounded in a suicide car bombing on Saturday that killed two of his guards and wounded six more, a police officer and a doctor said. The bomber detonated an explosives-laden vehicle at Governor Omar Al Humairi’s house in Baquba, the capital of Diyala province, a police lieutenant colonel said. Humairi, a member of the Iraqi Islamic Party, became governor of Diyala, a province that suffers frequent attacks by militants, in September.