Two car bombs ripped through a guard post outside the local governor's home in the central Iraqi city of Diwaniyah on Tuesday, killing at least 21 policemen, officials and a medic said. A police colonel said the governor of Diwaniyah province, Salam Hussein Alwan, had been the target of the attack but was late in leaving home and thus escaped unharmed, as did his family. The colonel, speaking on condition of anonymity, said the bombs exploded at 7:45 am (0945 PST) at a police barrier about 30 metres (100 feet) from the governor's home, seriously damaging blast walls protecting the compound. "The plan was for the bombs to explode as the governor left for work in his convoy of vehicles," he said. A medical source at the main hospital in Diwaniyah, 160 kilometres (100 miles) south of Baghdad, said 21 dead bodies had been received, all of them policemen, and many of them burnt. Thirty-five wounded people had been brought to the hospital. "All of the dead are policemen," the medic told AFP. "Among the wounded are 30 policemen and five civilians -- two children, two men and a woman -- people whose homes were nearby," he added.