The Rapid Action Battalion said on Sunday that they detained two operatives of banned extremist outfit Ansar Al Islam in Signboard area under Fatullah police station in Narayanganj.
Identities of the detained persons could not be known immediately.
A team of RAB-10 arrested the duo, who were also the accused in a case filed under Anti-terrorism Act, read a text sent by the battalion.
Leaflets and books related to extremism and manuals of training were also seized from them, it added.
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