Former Union Minister Pon Radhakrishnan, senior BJP leader La Ganesan, party national Secretary H. Raja, and former state party chief C.P. Radhakrishnan were detained here on Wednesday during their protest.
They were protesting near Gandhi statue on Marina beach demanding the arrest of Congress leader Nellai Kannan for allegedly instigating Muslims to kill Prime Minister Narendra Modi and Home Minister Amit Shah.
On Tuesday, Raja had said that the BJP will hold sit in protest at Marina beach to demand the arrest of Kannan.