At least seven Afghan civilians were killed on Wednesday when a suicide bomber blew himself up close to where government officials were distributing aid to people in a town in Afghanistan's southern Helmand province, a provincial official said. Five people were wounded in the attack in Babaji, outside Lashkar Gah, Helmand's provincial capital, said Dawood Ahmadi, a spokesman for Helmand's governor.Ahmadi did not know if any officials were among the casualties.