The arrestee was identified as Kamal Hossain, 25, a local shopkeeper and son of Habibur Rahman of Bularati village in Sadar upazila.
Mujibur Rahman, Awami Shechchasebak League President of Municipality unit, filed the case under Digital Security Act against Kamal and a female Sohana Parvin on Monday night.
Sub-inspector of Sadar Police Station SI Pradip Kumar Saha said Kamal was arrested from his house in the early morning on charge of posting offensive comments over Awami League leaders on Facebook.
Primary investigation showed that Kamal used the facebook ID of another accused of the case Sohana Parvin, SI said.
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