Tejashwi Prasad Yadav reached the spot at Patna city's Hartali Mor area to mark his protest
The RJD's youth wing members on Sunday clashed with the police during a Raj Bhawan rally to protest against "anti-people policies" of both central and state governments.
Police said they resorted to use of force to disperse some agitating RJD members although no one was injured in the incident.
The RJD had organised the Raj Bhawan march to submit a memorandum over deteriorating law and order situation in the state and Centre's failure to check price rise and corruption.
Following the police action on party workers, Leader of Opposition in the Assembly Tejashwi Prasad Yadav, who was not scheduled to participate in the rally, reached the spot at Hartali Mor area in Patna to mark his protest.
"It was the party's planned programme of Raj Bhawan march about which the authorities were informed in advance. The officials should have clearly said that they would not allow so many people except one or two if they wish to submit a memorandum (to Governor office) but that was not done by the police. Instead, they (police) resorted to lathicharge which was absolutely wrong," Tejashwi Yadav told reporters in Patna.
He said he will not sit idle if his party men were harassed.
"No one was injured during the incident nor anyone was arrested by the police. We are setting them free after giving notices. Besides, an FIR has been lodged against unknown persons in this regard," Patna City Superintendent of Police (Central) D Amarkesh said.
He said police had to resort to use of force after some RJD workers broke the barricade to enter the VIP area at Hartali Mor.