Two ethnic women died in Panchhari upazila after the thatched house they were sleeping in had caught fire on Sunday night.
The deceased were identified as Shanti Rani Chakma, 40, and her relative Ouri Chakma, 13.
The fire originated from a kerosene lit candle and engulfed the thatched house within a moment, Officer-in-charge of Panchhari police station Abdus Samad said quoting locals.
Police visited the spot on Monday afternoon and investigating whether the incident was natural or planned killing, said the OC.
"Legal action will be taken after completing the investigation," he added.