Kerala Police arrested four CISF personnel on Sunday in connection with destruction of property during the June 10 clash at Karipur airport between central armed police personnel and Airports Authority of India (AAI) officials, leading to the death of a jawan.
Kondotty Circle Inspector B Santosh, the Investigating Officer in the case, said the four were identified after review of CCTV footage of the incident.
The arrests followed a complaint by AAI with regard to damage to airport property.
CCTV footage had shown CISF personnel going on a rampage and damaging property at the airport, apparently after hearing the death of their colleague, he said.
Additional Director General of CISF Pachnanda is expected to visit the city to take stock of the situation.
Yesterday, police had registered a case against a Sub Inspector of the force S S Choudhary and 100 CISF personnel in connection with the clash.
A bullet from Choudhary's firearm had accidentally hit the jawan, causing his death, according to the police. The SI had suffered injuries in his left palm during the incident and is being treated.
Police had earlier arrested nine AAI officials on a complaint from CISF commander Biju. They were produced in court yesterday and remanded in judicial custody till June 27.
A dispute over a CISF personnel who insisted that an official of the Fire Force department of AAI undergo security clearance led to a verbal duel between the two and in the ensuing melee the jawan received fatal gunshot injuries.
On the day of the incident, the airport was temporarily closed after the violence and flights were diverted to Nedumbassery Airport in Kochi. Flight operations resumed on June 11.