BNP activists clashed with police in front of Chandrima Udyan in the city on Tuesday while visiting Ziaur Rahman's grave after the formation of new city committees.
The clash broke out around 10:30 am when the newly-formed convening committees of BNP's Dhaka city north and south units went to place wreaths at the grave of the party's founder Ziaur Rahman.
The new committees went to Chandrima Udyan to place wreaths at Zia's grave at 11 am on Tuesday.
Witnesses said some leaders and activists, including Aminul Haque, a member secretary of the BNP's Metropolitan North Committee and a former national team footballer, gathered at the park around 10:45 am. Then the police prevented them from going inside.
At that time, the police had an argument with Aminul Haque. At one stage, the police charged batons on them and fired teargas shells.
Aminul Hauqu, Convener of Dhaka Metropolitan north unit of BNP, said, "We've come here today to offer fateha at Ziaur Rahman's grave. But the police are not allowing us to stay there. At one point, police fired teargas shells and rubber bullets on us."
Jane Alam Munsi, officer-in-charge of Sher-e-Bangla Nagar Police Station, said, "The BNP activists were entering the field of Trade Fair which is they were not allowed to do. As there was an internal feud among BNP groups over forming the new convening committees, they started throwing brick chips on the police."
Later, police fired teargas shells and rubber bullets on them.