The installation of survey stones for the SilverLine project sparked violent scenes near Kaniyapuram on Thursday with four protesters sustaining injuries during a clash with the police.
While the survey has been temporarily called off, the police launched an inquiry against a police officer who has been accused of manhandling the agitators.
Attempts made by officials of the Kerala Rail Development Corporation Ltd. (K-Rail) and the Revenue department to resume the exercise at Karichara after nearly two weeks were thwarted by the Congress and K-Rail SilverLine Virudha Janakeeya Samithi activists.