Official sources said a group of protesting teachers suddenly sprung up from among the local people waiting to welcome Kumar on the road to Gandhi stadium, the venue of the public meeting, waved black flags and raised slogans in support of their demands, official sources said.
Some protesters ran waving black flags as Kumar's motorcade moved past them.
Protesters owing allegiance to NSUI threw slippers at Kumar's motorcade protesting against acute power shortage and shouted slogans against the state government.
A large crowd of protesters gathered also at the stadium and raised slogans against the chief minister and threw eggs at the dais on which Kumar and other dignitaries were seated, the sources said.
Securitymen in plainclothes stood in front of the dais and prevented the eggs and other objects being thrown by the protesters from reaching it.
They also lathicharged the protesters to disperse them injuring some of them, including some women.
More From This Section
The pandal, erected for the public meeting, collapsed and about 100 plastic chairs were damaged as protesters tried to escape the lathicharge, the sources added.
It may be mentioned that the Chief Minister has been facing the wrath of contractual teachers from September 19 - the first day of his state-wide tour to address 'Adhikar Sammelan' to press for special category status to Bihar.