"We have sought a detailed report from the state government about the incident," a Home Ministry official said.
Kumaraswamy is mired in a controversy after Saturday's release of an audio CD about him telling the supporters of MLC seat aspirant Vijugowda Patil, a JD(S) leader from Bijapur district, about the demand for money from his party MLAs.
In the CD whose clips were played on Kannada TV channels, Kumaraswamy, son of former Prime Minister H D Deve Gowda, was heard telling the supporters of Patil that "each MLA (of JD-S) is asking for one crore. They are saying you make anybody the MLC..."