Scott Westgarth
Scott Westgarth celebrates victory. Reuters/Action Images/Peter Cziborra

Boxer Scott Westgarth died Sunday at the age of 31 after he fell ill following a light-heavyweight fight in Doncaster, England, on Saturday. The Sheffield-trained boxer collapsed following his win over Dec Spelman and was later hospitalized.

The news of his death was announced early Monday by Westgarth's promoter Stefy Bull. The exact cause of death remains unknown, but reports say Westgarth suffered from bleeding in the brain.

"God bless Scott Westgarth," he tweeted. "To promote a boxing show and a young man doing a job he loves losing his life, I have no words."

"RIP lad thoughts go out [to your] family and [your] team it's been the hardest few days I've had to endure no idea what [to] do moving forward," the tweet added.

Images surfaced on social media showing the boxer in some discomfort as he carried out the post-fight interviews as per usual after the 10-round match. After returning backstage, Westgarth was taken to hospital. Westgarth's rest of the show featuring a main event with Curtis Woodhouse was cancelled.

"Prayers are with Scott Westgarth this evening, sometimes with all the hype around boxing you forget how dangerous this sport is. My fight with [Wayne Hibbert] is irrelevant and means nothing compared to life. Fingers crossed Scott is ok," Woodhouse wrote on Twitter after Wesgarth was hospitalized.

On Monday morning, Woodhouse again took to Twitter, writing: "Heartbreaking news about Scott Westgarth. RIP champ."

Former world heavyweight champion Frank Bruno paid tribute to Westgarth, writing on social media: "Very saddened to hear a boxer lost his life, my thoughts are with his family at this difficult time. RIP Scott Westgarth."

Bruno also shared a link to a GoFundMe page, started by Chris Waddams, to raise money for Westgarth's family. The Newcastle native won seven of his ten fights which included two knockout wins.

Tributes poured in on social media, with Westgarth's fans and friends paying their respects.

Matchroom promoter Eddie Hearn said: "Our thoughts and condolences with the family of Scott Westgarth, may he rest in peace."