The arrestees were identified as Masum Billah, 22, and Naim, 22. They were produced before the Additional Chief Judicial Magistrate court on Wednesday with a 5-day remand prayer.
They were sent to jail as the hearing did not take place.
Enamul Haque, officer-in-charge of Borhanuddin Police Station, said police arrested Masum from a market in 7 no. ward of Borhanuddin municipality after scrutinising the video footage of the incident and Naim from the court area of nearby Char Fasson municipality on Tuesday night.
With this, seven people have so far been arrested in two separate cases filed over the incident.
Four people were killed and more than 200 others injured on October 20 in the clash between police and demonstrating locals who were demanding punishment of a youth in Borhanuddin upazila for allegedly hurting religious sentiments on Facebook.