N Mallesham (30), who hailed from Chintakunta village in Kathlapur mandal, had gone to his in-laws house in Bhushanraopet village, nearly 80 kms from here, yesterday, Kathlapur police station sub-inspector B Ravi said.
At his in-laws residence, Mallesham broke into a scuffle with his wife and in a fit of rage took away his six- year-old son Manivardhan to the outskirts of the village and threw him into a well near an agricultural field at night, the SI said.
Upon following Mallesham, his wife and in-laws found the body of the boy inside the well. But Mallesham fled from the spot.
The body has been sent to government hospital at Metpalli for post-mortem and a case of murder under IPC section 302 has been filed against the man.
Police they have launched a hunt to nab Mallesham.