The police on Monday said they have found a man living with his mother's decomposed body in Kolkata's Salt Lake area.
"Maitreya Bhattacharya is being interrogated after neighbours complained about a stench from the house on Sunday night," said a police officer of Bidhannagar police station, adding the police have recovered the decomposed body of the woman.
He said post-mortem would ascertain when the woman would have died.
"We came know that the woman was dead. The son reportedly did not have cordial relation with her," said a neighbour.
Some original copies of school leaving certificates and identity proofs of the woman were found pasted on the wall outside the house with some remarks scribbled around.
"Maitreya Bhattacharya needs medical help as his mental condition seems unstable," said the police officer.
In 2015, a man, Partha De, had confessed that he had been living with his sister's corpse for months in his South Kolkata residence.