The CID also collected cyber evidence, including messages and posts about child- lifting gangs that were circulated on social media platforms in the area.
Nine people from the state capital Shillong had gone to the area for a picnic when they came under attack. While Macmillan Kharshandy lost his life, the others escaped with injuries.
Attack on farmers happened when they had gone to recover outstanding Rs 1.5 lakh from three labour contractors in Dhar district.
The Centre today asked the states and Union territories (UTs) to check incidents of mob lynching fuelled by rumours of child lifting on social media.
A number of Mob lynching cases were reported from various parts of the country in recent weeks after fake news started circulating on WhatsApp.
According to police, there were rumours for the last few days that a gang of child lifters was active in the area.