Security forces have killed six terrorists in an intelligence based operation in North Waziristan District.According to Inter-Services Public Relations (SIPR), intense fire exchange took place between own troops and the terrorists during the operation conducted on reported presence of terrorists in the area.Terrorists' hideout was also busted during the operation.The killed terrorists remained actively involved in numerous terrorist activities against security forces as well as target killings of innocent civilians in the area.Sanitization operation is being conducted in the area by the security forces, who remain determined to eliminate the menace of terrorism from the country.Source: Radio Pakistan