The ruling Communist Party of India-Marxist in Kerala said on Sunday that the killing of Rashtriya Swayamsevak Sangh worker Rajesh is not linked to politics.

"Probe shows the attack on RSS worker isn't political killing. Main accused isn't a CPI-M member," Kodiyeri Balakrishnan, CPI-M state secretary said.

"In last two weeks, two cases were registered against the victim and the main accused over personal rivalry. The BJP (Bharatiya Janata Party) is creating law and order problems," Balakrishnan said.

Earlier in the day, Union Home Minister Rajnath Singh voiced concern over attacks on political workers in Kerala and said political violence was unacceptable in a democracy.

During a telephonic conversation with Chief Minister Pinarayi Vijayan, Singh discussed with him the recent incidents of political violence in the state.

'I have expressed my concern over the law and order situation in the state of Kerala. Political violence is unacceptable in a democracy,' he said in a tweet.  -- ANI, PTI