A young boxer has died after being knocked unconscious by a single punch during his first fight.

Kuba Moczyk had been in a coma with a bleed on the brain following the blow, which came during the final round of a boxing match in Great Yarmouth on Saturday.

The 22-year-old was treated at the James Paget University Hospital, where his twin sister Magdalena kept a vigil at his bedside.

She had set up a ‘Wake up Kuba’ a GoFundMe page to raise £20,000 for specialist treatment abroad.

More than £4,000 was donated by friends, family and well-wishers before Mr Moczyk died on Wednesday, surrounded by family.

On the GoFundMe page, his sister said he had trained long and hard for his first fight, that he had been looking forward to the big day and wanted to make his team proud.

She said he was her older brother by five minutes, who I can’t live without.

Heavyweight champion Tyson Fury told local boxing events promoter Leon Docwra he had been left devastated by the news, and is understood to be attending a memorial event in the young boxer’s memory.

Mr Docrwa, 41, said he had trained Mr Moczyk three years ago, and remembered him as a happy, smiling person who did not have a nasty streak in his body.

Of the fight, he said: It was a big thing for him to do. He plucked up courage and got lots of support and everyone was cheering him on.

And that was his first and final fight.

He said he believed Mr Moczyk’s opponent was just 17.

(c) Sky News 2016: Boxer Kuba Moczyk dies after suffering brain bleed in first fight