The World Boxing Council (WBC) said on Tuesday it had provisionally suspended Dillian Whyte as the mandatory challenger for Deontay Wilder’s world heavyweight title because the Briton had failed a drug test.

Britain’s anti-doping agency UKAD has not commented on media reports that Whyte tested positive ahead of his fight in London against Colombian Oscar Rivas on July 20.

The WBC said in a statement: “An “A” Sample UKAD collected from Mr. Dillian Whyte in relation with his bout against Oscar Rivas yielded an adverse finding.

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“In light of that adverse finding, and pending the outcome of the WBC’s own investigation and adjudicatory process, the WBC is provisionally suspending the WBC’s recognition of Dillian Whyte as WBC Interim World Heavyweight Champion and Mandatory Challenger of the division.

“The WBC has notified Mr. Whyte and his team of the WBC’s suspension, and that it will afford Mr. Whyte the opportunity to present its position to the WBC at an investigative hearing which will take place at a place and time to be announced in the near future.

“Throughout its investigation and hearing, the WBC will afford Mr. Whyte and his team the opportunity to present any available information and materials, and any exculpatory evidence they might deem appropriate.”

Whyte won on a unanimous points decision at the O2 Arena, making him a mandatory challenger for Wilder.

The Briton served a two-year ban between 2012-14 after testing positive for a banned stimulant and risks an eight-year ban for a second offence, if confirmed. Whyte released a statement last week saying he had won the fight fair and square.

“I am so disappointed with the rubbish that has been said about me over the last few days,” he said then on Twitter.

“I have lawyers dealing with it and I have been told that I can’t talk about it for good legal reasons.”