The incident took place when Vishnu and his sister Lata were washing their feet in the water tank in their native village, said Kamlakar, Sub-Inspector of Police, Gajwel Police Station.
The kids along with their parents M Ravinder and Tara had come to the village to celebrate 'Raksha Bandhan', the officer said.
The duo slipped into the tank and drowned. A case has been registered in this regard and investigations are underway, Kamlakar added.
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