Four RSS workers were injured after some unknown persons hurled a crude bomb at the Rashtriya Swayamsevak Sangh (RSS) office near Nadapuram in the district on Thursday.
According to police, the incident occurred at Kallachi around 8.30 pm. The injured have been identified as Babu, Vineesh, Sudhir and Sunil.
While Babu and Vineesh, who suffered severe injuries in the abdomen and legs, have been admitted to the Kozhikode Medical College Hospital (KMCH), the other two have been taken to a private hospital here, a senior police official said.
Investigation is underway to ascertain the motive behind the attack, he said.
The attack took place hours after an RSS functionary in Madhya Pradesh announced Rs 1 crore bounty for beheading Kerala Chief Minister Pinarayi Vijayan.
Kundan Chandravat, 'Sah Prachar Pramukh' of RSS in Madhya Pradesh's Ujjain, announced the reward to avenge the killing of its workers in Kerala, allegedly by CPI-M workers.
"The Kerala Chief Minister is killing our RSS workers who want to take this country forward. I will pay Rs one crore to anyone who beheads him even if I have to sell my house," Chandravat was seen saying in a video, which has gone viral.
The RSS, however, distanced itself from Chandravat's remarks.
Meanwhile, a CPM office was also attacked in the city late last night. CPM's office in Vishnumangalam area was set on fire by unidentified men.
Police said that no one was hurt in the incident and a case has been registered in the matter. The attack took place immediately after the some unknown miscreants hurled a crude bomb at the Sangh office near Nadapuram.