Former Karnataka Chief Minister and veteran Congress leader S M Krishna has resigned from the primary membership of the party, sources close to him said on Saturday.
84-year old Krishna has written to Congress President Sonia Gandhi conveying his decision, the sources said here.
Asked about it, the former Minister for External Affairs declined to react, saying, "tomorrow. tomorrow."
He has called a press conference tomorrow, where he is expected to give details about his decision and his future plan of action.
Krishna, who was the state Chief Minister from 1999 to 2004 and a former Maharashtra Governor, is reportedly miffed at being sidelined in the party, with which he has more than five-decades-old association.
He had returned to the state in 2012 but had been maintaining a low profile in the last two years.
As the news broke out, apparently surprised state Congress leaders said they were not aware of the development and rushed to his residence to meet Krishna who was away at a function.
"I am not aware of it. If it is true, I can't even believe it. I do not want to react now," KPCC President and state Home Minister G Parameshwara told reporters.