Five police personnel were injured and three police vehicles damaged in an attack by RSS workers, who surrounded the police station here, demanding release of an arrested activist, police said on Tuesday.
The workers, who encircled the Kottarakara police station late on Monday night, were chased away by police.
They threw stones damaging three police jeeps, police said.
The police personnelâ€“ a Circle Inspector, Sub Inspector and three policemen, who were on patrol duty, were allegedly attacked by the workers and have been hospitalised.
Earlier, RSS worker Binesh, who was arrested in connection with a case, was brought to the station around 11.30 PM.
Angered over this, some RSS workers encircled the police station and forcibly entered it demanding his release.
Two cases have been registered in this connection against 35 persons, police said.