A woman and her son were among three persons who died on Tuesday when a pit from where they were collecting fly ash caved in at the Siltara industrial area on the outskirts of Raipur.
The incident took place at around 11 am in Sankra village and they got trapped, Dharsinwa Station House Officer Shivendra Rajput told The Pioneer.
Mohar Bai, her son Puneet Kumar and Pancho Bai Gahre died on the spot. Lalita Kosle (15) was injured, the officer said. The pit was earlier a coal yard.
Chhattisgarh Chief Minister Bhupesh Baghel expressed grief over the incident.