Irate locals clashed with the police following a cattle theft case in the area, police said.
During the clash, seven policemen, including the Dhupguri police station IC, Jugal Chandra Biswas, were injured while the locals set ablaze two vehicles.
To control the situation, police fired ten rounds in the area to disburse them.
Later the locals, alleging inaction on the part of police following frequent cattle theft cases, blocked National Highway 31 for three hours.