A college student went missing while swimming in the Dakatiya River in Gunrajdi area of Chandpur town on Sunday afternoon.
The missing student was Soumyadeep Sarkar (Apan), an HSC first-year student at Puran Bazar Degree College and son of Manik Ranjan Sarkar of Mission Road area in the town.
Syed Morshed Hossain, deputy assistant director of Chandpur Civil Defence and Fire Service, said a team of divers was dispatched again on Monday to continue the search operation, he added.
Witnesses said Soumyadeep along with a group of friends went to bathe in the Dakatiya River near Chandpur Municipality area.
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While attempting to swim in the river during a friendly competition, a large wave generated by a passing sand-laden barge swept Soumyadeep underwater.
Although his three friends managed to reach the shore Soumyadeep went missing, they said.
After receiving the information, divers from the river fire service unit, members of the Coast Guard, and river police launched a rescue operation which continued until Sunday evening.