Three Rashtriya Swayamsevak Sangh (RSS) activists were attacked, allegedly by more than 10 Communist Party of India (CPI-M) activists in rural Kozhikode on Saturday.
One CPI-M activist has been arrested. The others involved, who are absconding, have been identified.
The victims have been hospitalised following the attack. Sources said that the attack was motivated by local political rivalry.
This development comes just a days after an RSS leader from Madhya Pradesh held Kerala Chief Minister Pinarayi Vijayan responsible for the killing of its members in the state, announced a reward of Rs 1 crore for his head.
Kerala has always witnessed political murders, and the RSS-BJP and the CPM have lost several of their cadres. Last month, the death of BJP leader Santhosh was the eighth murder to have occured after the Vijayan government took over in May 2016.