KURRAM AGENCY - At least 11 militants were killed and six others sustained injuries in a clash between militants and security forces in the central parts of the agency here Sunday. Sources said the security forces pounded the suspected hideouts of militants in Ali Sherzai area of the agency with gunship helicopters and heavy artillery fire, killing 11 insurgents and injuring six others. Two hideouts of militants were destroyed completely, the sources added. The forces launched the operation in the agency on July 1 in which 180 militants had been killed while dozens others injured. The sources said the security forces have cleared almost 80 per cent areas of the agency. Volunteers of local peace militia were also fighting the insurgents.