The state police said on social media platform X that the security personnel responded appropriately by firing tear gas shells to control the situation.
Broadcaster NDTV reported that the crowd was demanding the reinstatement of a constable who had been suspended for taking photographs with “armed miscreants”.
Ginza Wualzong, spokesman for the state’s Indigenous Tribal Leaders Forum, told AFP on Friday that three people were killed and 25 others were seriously injured in the ensuing clashes, without giving further details on the victims.