Five persons have been arrested in connection with the incident which took place last night when workers of both parties were putting up buntings and flags after campaigning came to an end in the area, police said today.
Police said the CPI-M party office in the area was attacked and vandalised, while stones were thrown at the nearby TMC office according to FIRS lodged by the two parties.
CPI-M workers blocked busy arterial B T Road for sometime this morning. TMC workers followed suit afterwards. The blockades were lifted after the police persuaded the party workers.
Among the injured is the state president of CPI-M's youth wing DYFI, Sayandeb Mitra, the police said.
Three persons were arrested last night and another two today. Of the five two were named in the FIR filed by CPI-M.