Twin siblings drowned in a pond at Matlab Dakshin upazila of Chandpur on Thursday.
The victims were five-year-olds Jubaid and Junaid, son of Sharif Khan of Bohori village, said Dr. Mozammel of Chandpur Government General Hospital.
The incident happened this noon when they were playing near a pond in Bohori village under Upadi Uttar Union of the upazila.
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According to family members, the boys had just returned from school and were playing near the pond, leaving their books by the pond's edge.
Witnesses reported that family members found the twins floating in the pond and rushed them to Chandpur General Hospital where the on-duty doctor declared them dead upon arrival.