"Stones were pelted at our party office and cars parked outside. More than 10 BJP workers suffered severe injuries," Ghosh said.
Police sources said that a huge police contingent was rushed to the spot and the situation was brought under control.
"TMC activists were attacked by the BJP. Our party will never allow a communal force such as the BJP to disturb the peace prevailing in the state," she said.
An hour before this, a clash had occurred between workers of the parties at the Jorabagan area in central Kolkata over a motorcycle rally by the BJP's youth wing to mark the birth anniversary of Swami Vivekanada.
The Bharatiya Janata Yuva Morcha (BJYM) has embarked on an eight-day motorbike rally which started from Contai, in the southern part of the state, to Coochbehar in the north where it is scheduled to end on January 18.
The BJYM alleged that they were attacked by TMC "goons" when they were trying to take out a rally from the Jorabagan area.
Local TMC MLA Smita Bakshi denied the allegations and said those "who were trying to gain a foothold in Bengal are behind the violence".
TMC leaders alleged that the clash occurred after BJP activists misbehaved with local women and hurled abuses against its leadership.
A BJP delegation will meet Governor K N Tripathi this evening and lodge a complaint about the incidents, party sources said.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)