Stones were hurled at a rally taken out in support of the Citizenship Amendment Act in Jharkhand's Lohardaga district on Thursday, sparking tensions in the area, police said.
The incident happened when the rally, taken out by some Hindutva outfits, reached the Amlatoli Chowk area, they said.
Some two-wheelers were set on fire following the attack, police said.
Deputy Commissioner Akanksha Ranjan and Superintendent of Police Priyadarshi Alok are at the spot to control the situation.
A large number of police personnel have also been deployed in the area, official sources said.