Police, in a drive on Sunday morning, detained 31 Rohingyas from Chattogram's Boalkhali.
Abdul Karim, officer-in-charge of Boalkhali Police Station, said, "The Myanmar nationals, who had escaped various Rohingya camps in Cox's Bazar, were illegally working as labourers in lemon gardens in the hills of the upazila."
"The Rohingyas would live in temporary sheds at their workplaces. After filing a case against the Myanmar nationals, police handed them over to the court in the evening," he added.
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On June 11, police detained 12 Rohingyas, including four children, from Noakhali's Companiganj while they were fleeing Bhasan Char of the district's Hatiya.
Locals spotted them at Dakkhiner Ghat of Ward 3 of Char Elahi Union in the morning.
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During interrogation, the Rohingyas admitted that they had escaped Bhasan Char on a rented boat at the dead of the night to go to one of the camps in Cox's Bazar, according to locals.
On information, Companiganj police went to the spot and brought the 12 Rohingyas to the police station.