A roadside bomb today went off near a military vehicle in northwest Pakistan’s volatile Khyber Pakhtunkhwa province injuring at least four persons, including three security personnel. The incident occurred in Dera Ismail Khan district bordering South Waziristan agency. The bomb was planted on the roadside and went off when a military vehicle was passing. Three security personnel were injured, a security official said, adding that the vehicle was completely destroyed in the blast. At least three security men and one another person were injured when a roadside bomb went off near a military vehicle on the Kulachi Road, officials said. The injured personnel were immediately provided with medical assistance. A search operation was launched in the surrounding areas following the incident. Last month, two soldiers of paramilitary Frontier Corps (FC) were killed and four sustained serious injuries when their vehicle hit a landmine in District Sibi of restive Balochistan.