During the investigation, the four accused were interrogated and they confessed to have committed the crime.
The victim's brother alleged that the accused had warned his son that he would meet the same fate if he tried to rescue his mother.
Allegedly kept her in his custody for over six months, arrested
Sources said some of the animals that are in demand for black magic rituals are star tortoise, red sand boa snake, black kite and slender loris.
The priest of a temple in Titwala in Thane district was Saturday booked for allegedly indulging in black magic, police said.
Black magic practitioners believe harming animals will bring ill-effects on the targeted person.
The Tripura Police said that three persons have been arrested on the charge of killing the man identified as Lakhanjoy Reang.
The Shaikhs also forced the woman to pay Rs 50,000 by threatening to release the video of the act.
Dramatic scenes unfolded at Kalamassery Municipality on Monday in the form of black magic to oust Jessy K Peter from the post of municipal chairman.
He showed police a YouTube video, which detailed the process of sacrificing an owl and the 'tantric' rituals that had to be followed while performing it to that you could hypnotise the person.
When police reached Khakhla Village, the villagers showed that it was just a trick and the bed had an opening inside in which the child was laid and the sword also had been painted.
The note also said that the family was not facing any financial strain, and that the head Kunal Trivedi had lent Rs 14.lakh to some persons in Madhya Pradesh.
With the villagers alerting the police about the banned practice, the cops rushed to the spot and took five persons into custody, including the owner of the house, U Sambasiva Rao.
Blurring the lines between delusion, superstition and blind faith, it's a narrative that cuts across lines of class, religion and literacy, say experts.
Kanganheri is a village spooked after three of its women reported that their braids had been chopped while they were sleeping.