Rapid Action Battalion said on Thursday that they detained four suspected operatives of banned extremist outfit Jamaatul Mujahideen Bangladesh at different places in Dhaka, Narayanganj and Munshiganj.
Identities of the detained persons could not be known immediately.
RAB-11 detained the persons of Sarwar-Tamim group, a faction of the outfit, read a text sent by the battalion.
The battalion personnel also seized arms, explosives and books related to extremism from them, the text read.
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