The incident took place yesterday in Ramalya village when Rodi Bai threw her two sons- Champalal (7), Mukesh (5) and daughter Puja (7) into a well in a farm before jumping herself into it, they said.
However, later, they were pulled out of the well and taken to a hospital where doctors declared them dead on arrival, police said.
The reason behind the suicide was yet to be ascertained, police added.