A female suicide bomber wearing an explosive vest struck a checkpoint of neighbourhood patrol volunteers in Baquba, capital of Iraq's restive Diyala province, killing 10 people and wounding eight on Wednesday, reuters quoted police sources as saying. It was the latest in a wave of suicide bomb attacks that has appeared to intensify in recent days and weeks, even as overall levels of violence in Iraq have fallen. Two policemen and four patrol volunteers were among the dead, police said. Among those killed was Abdul-Rafaa al-Nidawi, whom police described as the coordinator between U.S. forces and the volunteer patrols in the city.