Two people were injured after unidentified persons hurled bombs at an RSS office at Kallachi here on Thursday night, a police official said.

"Two people have been injured and they have been taken to a hospital at Kozhikode. The police have begun the investigation," an official at the Nadapuram police station told IANS.

The immediate provocation for this action is seen as a possible retaliation to a Rashtriya Swayamsewak Sangh (RSS) leader from Madhya Pradesh, Kundan Chandrawat's threat on Wednesday that he would offer a sum of Rs 1 crore to have Kerala Chief Minister Pinarayi Vijayan killed.

“It’s a disgrace that he is the Chief Minister of Kerala,” Chandrawat said during an event in Ujjain. “I have the property, which is why I’m confidently saying it. I will write my full property in the name of the person who cuts his head and brings it to me,” he declared to the audience.

Chandrawat’s violent comments came a week after the Kerala Chief Minister attended a rally in Mangaluru, where he took on the RSS and the BJP.

“Since its inception, the RSS has only propagated communalism and have tried to spread violence related to it. The RSS ideology is not in tandem with the national sentiments. Unfortunately, they have now got the power to determine the functioning of our government. The PM himself is acting upon RSS’ instruction,” he said at the rally.

The state secretariat of the CPI-M has called for a state-wide protest on Friday evening against the statement of the RSS leader.

Police said they have registered a case against two CPI-M workers.