Official sources said the bomb, an improvised explosive device allegedly planted by insurgents to attack security personnel, went off at around one PM.
They said the insurgents used remote-controlled device to explode the bomb.
The officer-in-charge of nearby Kwakeithel police station, accompanied by a police force, went to the area soon after the explosion and started a combing operation. No arrest was made.
No individual or group has claimed responsibility for the explosion.