A nine-year-old boy drowned and one went missing while taking bath in the Mahananda River in Chapainawabganj Sadar upazila on Tuesday.
The deceased was identified as Mahmudullah of Kazipara's Notun Para Ghat area.
The missing boy, Sifat (13), is the son of Hanif from the same locality.
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Sazzad Hossain, officer-in-charge of Sadar Police Station, said they went down in the Mahananda River to take a bath at a ghat around 1pm.
At one stage, they drowned in the river, but locals retrieved Mahmudullah’s body after a while, he said.
Divers from the Fire Service and Civil Defence are conducting search operations for Sifat, he added.