One person was killed and four others were injured in a remote-controlled blast in the Bara Kamangra area of Nawagai tehsil in Bajaur Agency on Tuesday.
An official of the Nawagai Political Administration said that Frontier Corps (FC) personnel had launched a search operation in the area after an early morning blast.
A second blast occurred when a remote-controlled bomb detonated near the FC personnel, killing one of them on the spot and injuring four others.
The injured were rushed to the Agency Headquarters Hospital Khar, while security forces along with paramilitary troops rushed to the area and started another search operation. No suspects were arrested.
The official killed in the blast was identified as Kaleemullah and those injured were identified as Noor Sher, Zafar Khan, Saddam and Rehmat Nawaz.