Veteran actor Dara Singh, who was hospitalised two days ago after suffering a cardiac arrest, is 'extremely critical', hospital authorities said this morning.

"He is extremely critical. He is still on ventilator

and needs high level of oxygen. His kidneys are not functioning well," said Dr Ram Narain, COO, Kokilaben Ambani Hospital, Mumbai.

The 83-year-old actor is known for roles in films like King Kong and Faulad, and later as Hanuman in Ramanand Sagar's television serial Ramayan.

He was last seen in Imtiaz Ali's Jab We Met in 2007.