One security man was also injured in the attack. Nature of the blast could not be determined as yet.
The vehicle of security personnel was passing near Marget area when the blast hit the vehicle, leaving five soldiers dead.
Rescue teams rushed to the spot and shifted the bodies to a nearby hospital.
Heavy contingent of security forces also arrived at the crime scene and cordoned off the area to collect evidences. Bomb Disposal Squad has also been called to the site.