Several people protesting against the Koodankulam Nuclear Power plant were arrested in Chennai today including MDMK leader Mr.Vaiko besides many others when they tried to lead a procession to lay siege to the State Secretariat.Earlier in the day, the protestors gathered at the Raja Rathinam Stadium Egmore and were voicing out their demands like closure of the Plant, withdrawal of additional security force at Idinthakarai and withdrawal of cases against them.Two thousand police personnel have been deployed to prevent any untoward incident in the City as the Assembly Session is on.