An insurgent was torn to pieces by his own bomb when it exploded on a highway patrolled by Afghan and foreign troops in south-eastern Afghanistan, police said. Police believe the man was either a suicide bomber with explosives strapped to his body or had been planting the bomb at the side of the road on the outskirts of Khost city. “We found a torn-into-pieces body at the blast site on an empty road” leading to the Pakistani border, Khost police criminal investigation chief Colonel Mohammad Yaqoub said.