Police have detained Ganatantra Mancha leader freedom fighter Sheikh Rafiqul Islam Bablu, also the convener of Bhasani Anusari Parishad, from Gabtoli area.
Dr Yusuf Selim, also a leader of Bhasani Anusari Parishad and Abdur Razzak of Nagarik Oikya were also detained from the area.
They were taken to Darussalam police station.
The incident took place on Saturday when they went to Mazar road in Gabtoli to join the program of the Ganatantra Mancha.
Party's leader Jonaid Saki confirmed the matter.
He said: "The police are not allowing the gathering. Chhatra League leaders have also taken a position on the side along with batons and sticks.”