Police arrested BNP's Joint Secretary General Khairul Kabir Khokon on Thursday morning.
"He was shown arrested in a case filed on Tuesday over charges of vandalism and assault on police," confirmed SM Shamim, Assistant Commissioner of Police (Ramna Zone).
Matiur Rahman, sub-inspector of Shahbagh Police Station, filed the case against 20-25 identified and 475 unidentified people.
Two policemen were injured in a clash between a group of BNP leaders and activists and police while they were staging a demonstration in front of the High Court seeking party chief Khaleda Zia's release on Tuesday.
A number of vehicles were also vandalised during the clash.