CPI on Sunday expressed concern over the security of JNUSU President Kanhaiya Kumar in the wake of announcement of cash rewards for anyone "shooting him down" and "cutting off" his the tongue by some elements.

"Kanhaiya is safe in JNU campus, but he has threat outside the campus," CPI National Secretary Amarjeet Kaur told reporters in New Delhi.

Stating that Kumar, also a CPI member, had become the symbol of 'Save India democracy', she demanded the Centre carry out investigation into the JNU row to find out the truth.

The CPI leader alleged that the Narendra Modi government was trying to "polarise" the society to carry out votebank politics in order to hide its "failure on containing price rise, generating employment opportunities and bringing black money.