Three Rashtriya Swayamsevak Sangh workers were injured after a bomb was hurled at the saffron outfit's office in Kerala's Kozhikode district on Thursday, said reports.
The incident took place at Kallachi at around 9 pm on Thursday. The injured have been taken to the Kozhikode Medical College.
Reports say that police have reached the spot and investigating the matter. The police have tightened security in the area to prevent the situation from deteriorating.
The attackers have not been identified yet.
There have been several violent incidents involving the RSS and the CPI workers in Kerala in the recent past.
The incident assumes significance in the wake of comments made by RSS leader from Madhya Pradesh, Kundan Chandrawat.
Chandrawat had announced a Rs 1-crore reward for anyone who brings the head of Kerala Chief Minister Pinarayi Vijayan. Chandrawat held the ruling government in Kerala responsible for the recent killing of members of right-wing organisations in the state.