Two suspected Taliban gunmen fatally shot a local security chief and two government militiamen in a drive-by attack in southern Afghanistan, police said Wednesday. The gunmen, riding a motorcycle, opened fire on a pickup truck carrying the three victims in Deh Rawood district of Uruzgan province around 4 p.m. Tuesday, said Rozi Khan, the provincial police chief. Among the dead was Nasim Khan, the security chief of Girishk district in neighboring Helmand province, Rozi Khan said. He blamed the attack on Taliban rebels who are active in the region and often ambush Afghan forces. He said authorities across the province were on the lookout for the two attackers.