Three security personnel were injured on Tuesday when a roadside bomb went off in Tehsil Kolachi area of Dera Ismail Khan.
According to reports, the security forces vehicle was travelling to Loni area from Kolachi as the remotely controlled bomb went off.
The injured were shifted to nearby hospital for treatment. Meanwhile, security forces immediately launched a search operation after cordoning off the area.
Last month, a 28-year-old Pakistan Army major was martyred in a fire exchange with terrorists in the same area.