The state government has announced a three-tier probe into the incident by the police, the mining department, and the district administration.

UP minister Ravindra Jaiswal, who met the bereaved families of the victims on Monday, said each deceased worker’s family would receive around Rs 20 lakh from the government, and all affected labourers would be fully supported under schemes run by the Labour Department. Jaiswal said that strict action would be taken against those found guilty of illegal mining or violating safety standards.

The police have booked the owner of Krishna Mining Works and his business partners, Madhusudan Singh and Dilip Keshari, both residents of Obra, on a complaint by Parsoi Tola resident Chhotu Yadav, who said his two brothers – Indrajeet Yadav and Santosh Yadav – were trapped under the rubble and succumbed to their injuries. Their bodies were recovered on Sunday.

According to Sonbhadra Superintendent of Police (SP) Abhishek Verma, police teams were looking for the three accused.