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

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

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.
 

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