Sources said that some people, belonging to pro-Hindutva groups, started shouting slogans against Kanhaiya Kumar, demanding that he go back. The AISF members protested and soon a scuffle ensued in which three persons were injured.
The rally was held near 8B bus stand at Jadavpur in the southern part of the city.
A senior police official said that the injured were admitted to a hospital.
Senior CPI leader Prabir Deb said, "All of a sudden a few youths started shouting slogans and demanded that he go back. They pushed our supporters. It was then our supporters pushed them back. The police came and controlled the situation."
A senior leader of state Vishwa Hindu Parishad said, "Although we did not have any official programme, as far as we know youths who love their country and are nationalist had gone there to oppose Kanhaiya Kumar's rally at Jadavpur.