Islamabad, Oct 17 (Reporter) Three people were killed and two others injured in an explosion accident on a motorway near Pakistan's Islamabad, police said. The accident happened on Wednesday night near a toll plaza on the M1 motorway where an explosion occurred in a passenger van, motorway police said in a statement. "Preliminary reports suggest the accident occurred due to a cylinder burst," the statement said. The deceased and injured people have been shifted to a nearby hospital, it said...////...