The casualties were confirmed by Zahirgul Muqbil, Commander of Border Police Battalion in Lashkargah, who also revealed that the explosives were placed in a Mazda truck.
The incident comes in the wake of a series of deadly incidents that took place in Helmand province in the past few months.
Meanwhile, parts of the province have remained volatile due to presence of the Taliban.
Further details are awaited. (ANI)