A 59-year-old man has been arrested for allegedly killing his nine-year-old son by stuffing a paper ball into his mouth in Maharashtra's Thane district, police said on Wednesday, reported news agency PTI.

The Thane man was inebriated at the time of the incident which took place at Washala in Kasara area under Sahapur taluka on the intervening night of Monday-Tuesday, they said, adding the exact reason behind the crime was not yet known.