Champhai police sources said, a widow Lalzekimi and her two daughters, Zorammawii(5), and Lalremsiamiv (3), were charred to death last yesterday night.
''There was no power supply in the hamlet yesterday night. It is believed that the woman and the children fell asleep before putting off the candle,'' the sources said.
The Champhai police has registered an unnatural death case and their mortal remains were buried at the hamlets cemetery today.