An elderly man, his wife and their disabled son were found dead inside their house in Thakurpukur area of Kolkata on Tuesday, the police said.
Bodies of Gobindo Karmakar, 80, his wife Runu, 70, and their son Debasish, 50, were recovered by the police in the morning from their residence in Satyanarayan Pally.
"Prima facie, it appears to be suicide, but we are awaiting the post-mortem report," he said.
Locals said Debasish was differently-abled since birth and his mother had been paralysed after a recent heart attack.
They also claimed that all three of them had tried to get themselves tested for COVID-19 as Gobindo was running a temperature for the last few days.
Further investigation is underway, the police official said.
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