A 30-year-old man was arrested on Saturday for allegedly setting his mother on fire at MPV-55 village under the Motu police limits in Malkangiri district.
The woman, identified as 55-year-old Gita Mandal, passed away owing to severe burns.
As per the police, Tapas Mandal and his mother had an altercation over a property issue, following which the 30-year-old thrashed his mother and burnt her alive, subsequently leading to her death.
Further details of the incident are awaited.