More than 70 supporters of Team Anna were on Sunday detained when they staged a demonstration outside the residence of Union home minister P Chidambaram in Chennai.
The protesters raised slogans against Chidambaram and demanded an inquiry by a Special Investigation Team into the allegations of corruption against 15 Central ministers including him.
Police said the demonstrators were detained.
Following the protest, security has been tightened in the area.
The protest comes a day after Team Anna supporters staged a protest outside the Prime Minister's residence in Delhi.