The Wanted's Max George shares update on 'mystery' health condition from hospital bed: 'We don't know what caused it'

Singer Max George is opening up about a health issue that he says will keep him in the hospital through the holidays.

George, formerly a member of Britpop boy band The Wanted, has been hospitalised since last week with a heart condition.

Over the weekend, George shared an update on his Instagram Story saying that they've determined he has "an issue with the bottom part of my heart. It's called a block."

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"Until I have further tests we don't know what caused it," he added.

"We've cancelled out a few things – alcohol, for example. I haven't had a drink for four-and-a-half years so it's not that. It's a bit of a mystery, really."

George said he may need a pacemaker, which is a small, battery-powered device that monitors the heart and prevents it from beating too slowly, according to the Mayo Clinic.

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CNN reached out to a representative for George for comment.

George wrote on his Instagram page last week that he went the hospital after feeling "really unwell."

"Unfortunately after some tests they've found that I have some issues with my heart," he wrote on Thursday (Friday in Australia).

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"I have a lot more tests to determine the extent of the problems and what surgery I will need to get me back on my feet," he said.

He added that "it's gonna be a difficult few weeks" or months and that he'll be spending Christmas in the hospital.

"Although this is a huge shock and no doubt a setback, it's something I'll take on with all I've got! I count myself very lucky that this was caught when it was," he wrote.

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Despite his health setback, George appeared to be in good spirits on Sunday (overnight in Australia) as he was getting ready to watch the Manchester City-Manchester United football match.

"I'm all set for the game," he said in the clip posted to his Instagram Story, showing a photo of himself, smiling and wearing a his team's jersey in his hospital bed.

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