Jayalalithaa undergoes heart surgery, she is fine, says AIADMK

"There was an angio procedure this morning. Doctors say don't worry, Amma will be fine," said party spokesperson CR Saraswathi, adding, "we are telling cadres don't worry. God is with Amma, she will come back. Definitely she will be ok." 

Jayalalithaa, 68, had a cardiac arrest on Sunday evening and was put on an extracorporeal membrane heart assist device, a life support system that aids heart and lung functioning.

Union Health Minister JP Nadda said a team of four top doctors from Delhi's prestigious AIIMS has been sent to Chennai on the request of Apollo Hospital, where Jayalalithaa  has been since September 22.

Apollo has not put out a medical update this morning. Its Sangeeta Reddy tweeted last night, "TN CM #Jayalalita is critical. Multi speciality team @hospitalsapollo trying everything, including ecmo. Praying for her recovery."

Hundreds of Jayalalithaa's supporters have gathered outside the hospital.

Security has been increased outside the hospital.

On Sunday, Apollo hospital had said that Jaylalithaa was being  treated and monitored by a team of experts including Cardiologists, Pulmonologist and the Critical Care Specialists.

The hospital had also tweeted: "The Hon'ble CM is the beloved leader of the masses. Please join us in praying for her speedy recovery. #GodblessAmma #Jayalalithaa."

"Dr Richard Beale from London has also been consulted and he has concurred with the line of treatment by our cardiologists & pulmonologists," it had said.

Meanwhile, president Pranab Mukherjee and other political leaders have wished for the southern leader's speedy recovery.

"Distressed to hear about CM Jayalalithaa suffering a cardiac arrest, my prayers for her speedy recovery #PresidentMukherjee," read a tweet posted on the President of India's Twitter handle.