The BJP has taken serious exception to Digvijay Singh's statement on Tuesday that the saffron party may instigate communal violence to consolidate its dwindling support base.
The BJP on Wednesday said it would file a complaint with the Director-General and Inspector-General of Police against Singh.
Karnataka State party unit general secretary CT Ravi said such remarks only raises doubts on whether Singh had come to Bangalore with a "conspiracy" to destabilise communal harmony in Karnataka.
He said the Congress had resorted to destabilising communal harmony in the State on several occasions for political gain.
Ridiculing him, Ravi said after losing ground in his native State of Madhya Pradesh, Singh was trying to retain his place in the Congress by levelling such baseless allegations.
Digvijay Singh had said at the the KPCC general body that "the Sangh parivar and BJP are conspiring to incite communal violence in Congress-ruled states including Karnataka. The government will have to keep strict vigil on Hindutva organisations."
"The BJP has realised that they won't win unless they play communal card communal and they want to secure victory by inciting communal passions," he said.
Digvijay wanted the state government to take all precautionary measures to prevent fundamentalist organisations from fomenting trouble.
In response, Karnataka Chief Minister Siddaramaiah had assured Digvijay that he won't allow Hindutva organisations to "wag their tail".