The cops are also examining whether any financial aid has been extended to the miscreants from any quarter for indulging in apparently organised violence.
The total number of arrests recorded by the police in connection with the PFI hartal in Kerala has now gone up to 1,287.
At least 819 others have been kept under preventive detention in connection with Friday's Popular Front of India hartal.
The coastal locality in Kozhikode was bustling with activities on Friday as Popular Front of India observed a 12-hour hartal throughout Kerala.
The all-Kerala hartal organised by the PFI protesting nationwide raids by the NIA was observed from 6 am to 6 pm on Friday.
Incidents of violence, including stone pelting were reported across the state on Friday.
The strike will be observed from 6 am to 6 pm, the Front's state committee said in a release on Thursday.
In case of hotels and restaurants, one of the worst affected sectors in a shutdown or 'hartal', business lost is lost forever.
Two CPM workers have been held in connection with the attack on the panchayat secretary.
In Kozhikode, supporters of the hartal allegedly ransacked the office of Asianet Broadband near Nadakkavu.