It was a water tanker, as per TV reports.. Motorcycle bomb can't damage to this extent...
This kind of mass explosive dumps come from the western border or can be managed internally? If it was a water tank, then we are talking about few 100 KGs of explosives...
One can only pray for those who lost their innocent lives for no fault of theirs... Even God'd be ashamed that he could create humans who could kill fellow humans this mercilessly