Dravida Munnetra Kazhagam (DMK) president and former Tamil Nadu chief minister M Karunanidhi was admitted to the Kauvery Hospital in Alwarpet at around 6.15am on Wednesday.

Reports said that the 94-year-old former Tamil Nadu chief minister will undergo a minor endoscopic procedure. During the procedure, the doctors will change the feeding tube taht was given to  him in December.

A statement issued by the Kauvery Hospital executive director Dr S Aravindan said he will to be discharged by evening. In December, Karunanidhi had undergone a tracheostomy, a procedure where a hole is made in the windpipe to remove fluid congestions caused by a bacterial infection and administer oxygen.

He also underwent a percutaneous endoscopic gastrostomy (PEG) procedure in which a flexible feeding tube is put through the abdominal wall into the stomach. The tubes allow nutrition, fluids and or medications to be put directly into the stomach, bypassing the mouth and oesophagus. "The tube in the abdomen is now being changed," he said.

His family members including his wife Rajathiammal, daughter and MP Kanimozhi, elder daughter Selvi and senior DMK leaders K Ponmudi and deputy opposition party leader M Duraimurugan were present at the hospital.

Karunanidhi's son and DMK working president MK Stalin currently is in London on a personal visit. The five-time chief minister of Tamil Nadu, who celebrated his 94th birthday on June 3, has been keeping away from all public events. Recently, he even failed to cast his vote during the presidential poll due to health reasons.