Police arrested a man from Harirampur upazila in a case filed under the Digital Security Act for allegedly criticising Manikganj-2 constituency's ruling Awami League MP Momotaz Begom on Facebook.
The arrestee was identified as Firoj Al Mamun, 50, son of Ramjan Ali Munshi of Kaloi area in the upazila.
Harirampur Upazila Vice-Chairman of Azim Khan filed the case under Digital Security Act at Harirampur Police Station.
Officer-in-Charge of Harirampur Police Station Muin Chowdhury said they arrested Mamun from his home on Monday night.
According to case statement, Mamun 'defamed' the Manikganj-2 MP in a Facebook post on May 9.