The sources said the security officials were attacked in Datta Khel area of North Waziristan Agency near Afghan border. They said a vehicle of security forces was completely damaged in the bomb attack.
Heavy contingent of forces rushed to the spot and launched a search operation in the area. The injured were shifted to a near by hospital for treatment. Local sources said a curfew was imposed in the area.
Pakistan military has long been battling a Taliban-led insurgency in adjacent South Waziristan Tribal area and continuously rejecting a US demand of launching an offensive in North Waziristan against what US said Haqqani Network, a strong faction of Afghan Taliban.