The incident took place around 9:30 on Friday night. At this time they tried to break the gate and walls and chase counter chase.
Protester activists stair up on the second floor and kicked at the door and vandalized. Clash rises while BNP chairperson's security staff prevented them at this time. At one stage, clashes breaks out of the office.
Khandaker Akter Hamid Dablu, elder son of Khandaker Delwar Hossain, former BNP secretary general, and former MP of Chuadanga, Mohammed Ahidul Islam, led the incident.
Meanwhile, BNP's secretary general Mirza Fakhrul Islam Alamgir, along with the top leaders of the party are confined in the Gulshan office.
In addition, there are many leaders of the Jatiya Oikyafront including Advocate Subrata Chowdhury, Mostafa Mohsin Montu, Sultan Mohammad Mansur and several BNP standing committee members are inside.