Complex sentence: Later, the police which was under the control of the Travancore Diwan C P Ramaswamy Iyer cracked down the movement and other leaders who were involved in an ambush on the police were arrested.
Split into simpler sentences: Later, the police which was under the control of the Travancore Diwan C P Ramaswamy Iyer cracked down the movement. A few leaders who were involved in an ambush on the police were arrested.