Three policemen were suspended as a Rohingya man escaped from police custody in Chattogram court building area on Sunday.
One sub-inspector and two constables were suspended following the incident.
Police said Abul Kalam, a Rohingya man, fled the scene while being produced in court along with other accused in the afternoon.
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Earlier in the morning, Kalam was arrested along with 1,050 pieces of Yaba from the Station Road in the port city and then handed over to Kotwali Police Station.
Confirming the matter, Nezam Uddin, officer-in-charge of Kotwali police station, said a drive is on to arrest the Rohingya man.
Departmental action will be taken against the policemen after an investigation, the OC added.