When he got tired, Manoj Kalos (left) asked his son Sunil (centre) to step in and assault Santosh Suryavanshi with belts and brooms. The next morning, Sunil’s body was found with wounds all over the back. Pics/Shailendra Joshi

Mindless acts performed under the garb of ‘black magic’ have claimed a 21-year-old man’s life. A tantrik and his son were arrested on Tuesday for brutally thrashing the mentally unstable man to death under the pretext of treating him. The Hill Line police have also arrested a eunuch for referring the deceased to the tantrik.