Tyson Fury’s promoters say they are “baffled” by claims the world heavyweight champion is embroiled in a doping investigation.

A report by the Sunday Mirror alleged traces of a banned substance were discovered in a sample taken last year.

But Fury’s promoter Hennessy Sports has denied the allegations.

A statement read: "We are baffled by today's story in the Sunday Mirror. Tyson Fury absolutely denies any allegation of doping. He looks forward to recovering from his injury and defending his titles against Wladimir Klitschko in October."

UK Anti-Doping (UKAD) — which the Sunday Mirror reported was overseeing the investigation — spokeswoman Sophie Ashcroft said: “UK Anti-Doping does not discuss or disclose details of any cases until due legal process has been completed or a respondent chooses to put the information into the public domain.

“This is to protect the rights and privacy of all involved and to ensure that a case is not subjected to unnecessary prejudice.

“It is important to note that an anti-doping rule violation is only deemed to have been committed once the legal process, including any appeals, has been completed. At that point, details of a violation will be made available on the UKAD website.”

Fury announced last week that his heavyweight world title rematch against Wladimir Klitschko has been postponed after he suffered a sprained ankle in training.

Fury, who was due to face Klitschko at the Manchester Arena on July 9th after winning their first bout in Germany last November, posted a video on Instagram on Friday that he has had to pull put.

“I’ve got a little bit of bad news for you all,” said the 27-year-old. “About 10 days ago I was running up in the Lake District and i went over on my ankle and sprained it. The fight will be being postponed - I’m sorry to all my fans to let you all down but injuries do happen. The fight will be on as soon as possible.”