84-year-old Krishna had announced his resignation from the Congress on January 29, saying the party was in a state of confusion.
New Delhi: Former External Affairs Minister S.M. Krishna will join the Bharatiya Janata Party (BJP) today.
Krishna put off his plan to join the BJP last week after the death of his sister.
Though he had reached New Delhi to hold consultations with BJP president Amit Shah and to join the party, he had to rush back to Bengaluru after hearing the news of her death.
84-year-old Krishna had announced his resignation from the Congress on January 29, saying the party was in a "state of confusion" on whether it needed mass leaders or not.
Krishna, who was the Karnataka Chief Minister from 1999 to 2004, had returned to state politics after stepping down as then External Affairs Minister in 2012.
He has also served as the Governor of Maharashtra.