The BJP’s allies in the state, the DMDK and the PMK, also greeted Sounderrajan.
DMK said Prime Minister Narendra Modi should focus on economic growth and social development.
DMK alleged that Election Commission did not act on complaints of irregularities, it made out against ruling party AIADMK in the state.
Chandrasekhar Rao was on Monday sworn in as Chief Minister of newly-carved out state of Telangana.
Sources said DMK was likely to go in for a major overhaul by changing leaders in some districts, where party candidates performed very poorly.
When the results were declared on May 16, Karunanidhi had greeted BJP and Modi on the ‘big win’ and vowed to continue to work to win people’s confidence.
Police said the arrested were produced at a local court which remanded them to 14 days judicial custody.
Quits party post, changes mind on DMK chief’s advice.
The bypoll was necessitated following the resignation of the seat by Panruthi Ramachandran, who quit DMDK and later defected to AIADMK.
DMK chief questioned the propriety of making such a comment, given that Tamil Nadu goes to polls on April 24.
The former Union Minister, who was expelled on March 25, is believed to have intentionally kept away when Karunanidhi was in Madurai for campaigning recently.
The BJP’s Prime Ministerial candidate had said arch rivals DMK and AIADMK settle political scores whenever they were in power.
Alagiri has refused to relent in his campaign against his brother even after his expulsion from the party.
DMK chief had said on Wednesday that he was ready to forgive their (Congress’s) acts if the Congress leaders were to express regret.
Anyone who lacks gratitude – brother or wife or son or anyone, DMK will not forgive; won’t forget their mistakes, said Karunanidhi.