"All these goings-on (rpt) goings-on have no effect on DMK-Congress alliance and in future also it will have no effect," the Union Minister told reporters after meeting Karunanidhi.
He said Congress President Sonia Gandhi is concerned about Kanimozhi being in jail and he expressed sympathies with the DMK over the issue.
"Our leader Sonia Gandhi is concerned because Kanimozhi being a woman is in jail and it is a matter of concern and the fact is that one cannot do anything," Azad said.
He, however, clarified that the government would not interfere in the legal process.
Azad, who is also Congress in-charge of Tamil Nadu, maintained that Karunanidhi understands that the Supreme Court is directly monitoring the 2G spectrum case and the government has no role in it.
"Karunanidhi is a man of political standing and also a man of political understanding. He knows well that the Supreme Court is monitoring and a special court is looking into it. He also knows the opinion of the Government of India as it is not interfering in any cases, including the (Suresh) Kalmadi case," he said.
"I am happy Karunanidhi understands it all.... Congress has no role to play here (in the case)," Azad said, adding that Karunanidhi knows the circumstances and the prevailing situation and the role of law agencies in the matter.
Later, Congress spokesperson Jayanthi Natarajan met Karunanidhi.
She told reporters after the meeting that the ties between Congress and DMK were the same.
"The DMK has said that it will fight the case legally. I met him (Karunanidhi) as a courtesy," she said.
Natarajan said Karunanidhi told her that Kanimozhi was fine and she is prepared to fight the case legally.
Home Minister P Chidambaram and Minister of State in the Prime Minister`s Office M Narayansamy had met Karunanidhi yesterday to discuss the issue.