Muhammad Ali in 'grave condition'

Muhammad Ali (Getty file)

Sporting legend Muhammad Ali is in 'grave condition' as he continues to battle with a respiratory condition, reports NBC News.

The 74-year-old icon has been laid up in a Phoenix hospital with his family bed-side for the past 48 hours after what was only expected to be a 'brief visit.'

After being initially diagnosed back in 1984, Ali has been struggling with his Parkinson's disease for the past few years, the illness that lead to the respiratory issues he's currently dealing with.

There has been no official update on his condition since Thursday (NZT) leading to growing concerns about his declining health.

A spokeswoman for his daughter, Laila, said, "Laila's number one priority is her father's well-being. She truly appreciates the outpouring of love for her family, as she spends quality time with her dad."

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