A case of accidental death was registered following the recovery of the bodies, which were sent for post-mortem.
Policerecorded the parents' statement today and sent the boy's medical papers to a committee of experts.
Congress president Rahul Gandhi said in a tweet that,There is a leak in everything, the 'chowkidar' is weak.
The incident took place at Jadavpur in the south Kolkata on Sunday, a police officer investigating the case said.
In a sign of the Indian diaspora's growing influence, two cabinet-level officials of Indian-descent represented the biggest superpower, the US, and its neighbour, Canada, at the UN Security Council's ministerial-level meeting on peacekeeping on Wednesday.
The Yogi Adityanath government has decided to introduce ‘Ramji’ as the middle name of the Father of the Constitution B R Ambedkar in all official correspondence and records, an order that has raised Opposition hackles ahead of the 2019 Lok Sabha polls.