According to police, the clash took place between the Trinamool Trade Union Congress and SUCI (Socialist Unity Centre of India) over alleged recruitment of TMC activists in a paper mill in Pratapur.
The clash took place in front of the paper mill after the TMC activists attacked the SUCI protesters who were staging a demonstration against the recruitment policy.
Among the injured were four TMC and three SUCI activists who have been admitted to the Durgapur hospital.