Three security officials were injured in a bomb blast near a vehicle of security forces in Tehsil Kolachi of Dera Ismail Khan on Tuesday.
Takfiri terrorists have been attacking security officials in entire Khyber Pakhtunkhwa province and FATA.
According to the police sources, a remotely controlled bomb exploded when the security forces vehicle was travelling to Loni area from Kolachi.
The injured were shifted to nearby hospital for treatment. Meanwhile, security forces cordoned off the area and launched investigation.
Last month, a 28-year-old major of the Pakistan Army was martyred in an exchange of fire with terrorists in the same area.