‘Unresponsive’ Muhammad Ali readmitted to hospital

According numerous reports, the three-time former heavyweight world champion was taken back to hospital after guests at his home failed to wake him up.

Ali, 72, was admitted to a hospital in an undisclosed location shortly before Christmas suffering from a urinary tract infection.

A spokesperson for Ali said that he had been readmitted for treatment for the same urinary tract infection. Family spokesman Bob Gunnell, said: "There were further issues with the earlier diagnosis of a urinary tract infection."

However, a source told Radar Online that guests called 911 early on Thursday morning after being unable to wake the boxing champ.

“He wasn’t responding,” said the source. “He went to bed Tuesday night, but didn’t wake up in the afternoon or evening the next day. He was sleeping for 24 hours.”

A three-time world heavyweight champion and widely recognised as one of the best fighters ever, Ali, who suffers from Parkinson's disease, made a rare public appearance in September to attend a ceremony in his hometown of Louisville, Kentucky, for the Muhammad Ali Humanitarian Awards.

Ali, nicknamed 'The Greatest,' was diagnosed with Parkinson's about three years after he retired from boxing in 1981 with a 56-5 record.