A 44-year-old software professional, his wife and their eight-year-old son were found dead in their flat in the Aundh area of Pune city on Wednesday, police said.

It seemed that the man first killed his wife and son and then hanged himself, they said.

The deceased were identified as Sudipto Ganguly, his wife Priyanka and son Tanishka.

"As the deceased couple was not responding to phone calls, Sudipto's brother who lives in Bengaluru asked a friend to visit the house. After finding the flat locked, he filed a missing persons complaint," said an official of Chatushringi police station.

But police then found that the couple's mobile phones seemed to be inside the flat as per location data.

After gaining entry inside by using a duplicate key, police found Sudipto hanging from the ceiling while his wife and the child were found dead with polythene bags wrapped around their faces.

No suicide note was found from the spot, the official said.

Sudipto had left his job with a software firm to start his own business, he said, adding that further probe was on.

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