DMK president M Karunanidhi underwent on Friday tracheostomy at a private hospital to optimise breathing. His condition is now stable.

“He is stable, is on antibiotics and is being treated by a team of doctors,” Kauvery Hospital said in a statement.
Karunanidhi was readmitted to Kauvery Hospital in Chennai on Thursday night after he complained of difficulties in breathing.
The 92-year-old was rushed to the facility from his Gopalapuram residence at around 11:10 pm, about a week after being discharged from the same hospital.
Karunanidhi’s son, MK Stalin, daughter Kanimozhi and senior DMK leader TR Balu were among those who visited the hospital.
A drug-induced allergy has kept Karunanidhi out of public activities for over one month.
His illness comes at a time when Tamil Nadu politics has suffered a leadership vacuum following the death of chief minister J Jayalalithaa at the age of 68.
The movie-star-turned AIADMK leader, who enjoyed a huge following, died at Chennai’s Apollo Hospital on December 6 after a 75-day battle for life.