Dhaka, June 14 (IANS) Bangladesh's elite police force, the Rapid Action Battalion (RAB), on Monday arrested an active member of the banned Ansar al-Islam militant outfit in Nakla, Sherpur district.

In the early hours of Monday, a joint team of police and RAB-3 Tikatuli Dhaka arrested the 19-year-old Md. Hasan Mahmud from Lava Madhyapara area.

Bina Rani Das, Additional Superintendent of RAB-3 media told IANS that Mahmud had been posted anti-state, anti-government, provocative, extremist content on social media.

Obtained from his mobile and Facebook account, preliminary evidence of involvement in militancy has been found.

Legal action is being taken against the arrested accused.

--IANS sumi/ksk/