Members of the Rapid Action Battalion (RAB) arrested four suspected members of banned militant outfit Jamaat-ul-Mujahideen Bangladesh (JMB) early on Saturday morning.
The identities of the arrestees are yet to be revealed. A cache of arms and explosives has been seized from their possession.
Wing Commander Rokunuzzaman, commanding officer of Rab-14, said acting on intelligence inputs, a team of RAB-14 raided Khagdahar in Mymensingh district.
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Sensing the presence of the elite force, the JMB men opened fire on RAB, prompting the personnel them to retaliate.
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"However, the RAB men managed to overpower and arrest the militants after the brief exchange of fire," the officer said.