BNP leaders and activists began their protest rally in Dhaka's Nayapaltan area on Tuesday morning, condemning the attack on BNP Standing Committee member Gayeshwar Chandra Roy.
The procession commenced around 11am from the party's central office in Nayapaltan.
The protest rally was organized by Keraniganj Thana BNP.
BNP Secretary General Mirza Fakhrul Islam Alamgir will be present as the chief guest.
On Saturday, police detained BNP Standing Committee Member Gayeshwar Chandra Roy along with some other BNP men from Dholaikhal area in Dhaka.
They were picked up in a police car around 12pm after a clash.
Later, Gayeshwar Chandra Roy was released hours after he was detained from the Jatrabari area.
A video of Gayeshwar having lunch at the office of the Detective Branch (DB) of Police during his detention.
Later the senior BNP leader described the ordeal of lunch at DB office and said the video and pictures have been circulated with the intention to mislead people. Gayeshwar said spreading videos and photos of the incident on social media is a low-taste joke and a very shameful and hateful act.