"Vandana, wife of one Kishore Vadgama who is a carpenter by profession, today burnt her two-year-old son Raunak alive, after dousing him with kerosene," they said.
The incident took place this morning at Vambay Awaas Yojana, where the couple is staying, when Vadgama was out on work and Vandana was alone in the house, they said.
During investigations, Vadgama told the police that his wife was mentally unstable and therefore had taken the extreme step.
However, later Vandana said she was fed up with the mental torture by her husband, police added.
The accused was booked under section 302 (murder) of the IPC.