Kolkata, Sep 13 (ANI): Trinamool Congress and CPI (M) entered into a clash in Kolkata on Saturday even as by-polls are underway in the constituency. The police personnel arrived at the spot and tried to control the situation. Many party workers injured were taken to nearby hospital. CPI (M) leader Faiyaz Ahmed Khan alleged that TMC started the conflict and manhandled women leaders too who are taken to hospital. Basirhat South and Chowringhee assembly seats of West Bengal went to by-polls on Saturday.