Two siblings drowned as a boat capsized in the Dakatia river at Jhidda village of Gunabati union of Cumilla Chauddagram upazila around 11am on Friday.
The deceased were identified as Tanvir Rahman, 16 and Aranya Akter Anamika, 20, children of Anisur Rahman.
Locals said Tanvir and Anamika went to visit the river with their cousins in a boat. At that time, due to strong winds, the boat capsized in the river. Though the cousins managed to swim ashore, the siblings drowned.
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Later, after five hours of frantic efforts by the villagers, the dead body of Tanvir was found in the river.
Shuvo Ranjan Chakma, officer-in-charge of Chauddagram police station, confirmed the matter and said a team of police was sent immediately to the spot.