BJP and Trinamoool Congress (TMC) activists today clashed outside the saffron party's headquarters here and at another place in the city in which several workers of both the parties were injured, the police said.
The clash ensued when sloganeering TMC workers allegedly pelted stones at the BJP headquarters around 10.30 am. Several people were injured in the clash, the police said.
The vehicle of Calcutta High Court-appointed Special Officer Rabishankar Dutta was damaged in the violence, they said.
The police said that a huge police contingent was rushed to the spot and the situation was brought under control.
Ghosh alleged, "Stones were pelted at our party office and cars parked outside. More than 10 workers of our party suffered severe injuries."
"Is this democracy? The law and order situation has completely broken down. Only President's Rule can bring back the rule of law in the state," he said.
"TMC activists were attacked by the BJP. Our party will never allow a communal force like the BJP to disturb the peace prevailing in the state. They are doing it to make their presence felt," he said.
Another clash 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 BJP staged a sit-in at the Gandhi statue on Mayo Road wearing black bands on their faces to protest against the alleged attack.
The BJP has decided to put on hold the BJYM's motorcycle rally that started in Contai, in the southern part of the state, and was scheduled to end on January 18 in Coochbehar in the north.
The party said its was tough to carry on with the programme in the present circumstances.
"We have decided to put an hold on the rally, we will take a call within next two days. We don't have faith on state police. We want the rally to be organised under the protection of central forces," Ghosh said.
The Calcutta High Court has directed that the BJYM's rally be stopped for two days and recommence from January 15, following the mob attack on it here.
A division bench comprising Acting Chief Justice J Bhattacharya and Justice A Banerjee directed that further movement of the rally be postponed till January 15 and would end at Coochbehar on January 20, two days after the original schedule.
A BJP delegation later met state governor K N Tripathi and complained about the incident. The party has also decided to organise a demostration outside all police stations in the state tomorrow.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)