Rapid Action Battalion (Rab) claimed to have arrested a member of banned militant outfit Hizb ut-Tahrir from Chattogram city today 30 days after he allegedly went missing.

Mohammad Moshin, officer-in-charge of Kotwali Police Station, told our Chattogram correspondent that a team of Rab-7 arrested Ridwan Ahmed Siam, 19, an alleged operative of Hizb ut-Tahrir, from the city's railway station area today.

 Later, the Rab handed him to the police station, said the OC.

Ridwan, a student of HSC of Hazi Muhammad Mohsin College, went missing on November 30 after he came out from coaching in Nasirabad area of the port city.

Ridwan’s father filed a missing diary with Chawkbazar Police Station on the same day.

Police said he is an accused of a case filed under the Anti-Terrorism Act with Kotwali Police Station on November 23. Police also earlier arrested 15 leaders and activists of Hizb ut -Tahrir last month in the case.

The case is being investigated by Counter Terrorism unit of Chattogram Metropolitan Police (CMP), OC Moshin added.