Conor Benn has been stripped of his boxing licence after his recent failed drugs test.
The move comes from the British Boxing Board of Control after the failed drugs test ahead of his fight against Chris Eubank Jr.
Benn returned a test for banned substance clomifene.
The BBBofC insisted the contest was prohibited from taking place, forcing the plug to be pulled just days before it was due to take place.
He has maintained his innocence and vowed to clear his name but it was confirmed on Wednesday that he had relinquished his license at a hearing last week.
It was also confirmed a hearing over "allegations of misconduct" against Benn had been upheld.
The news comes after promoter Eddie Hearn claimed the BBBofC leaked the results of the failed drugs test.
Matchroom chief Hearn told talkSPORT: "Firstly, nothing was kept quiet. This is a really important fact. People feel this was brushed under the carpet.
"But, the British boxing board of control which are our governing body and the regulators - who decide if a fight will take place or not - knew all information at all points.
"All information around the test will be released by Conor Benn in due course. It's very important for us."
A statement from the BBBofC read: "By a notice dated 17th October 2022, Mr Conor Benn was called by the Board of the BBBofC to attend a hearing to deal with allegations of misconduct pursuant to Rule 25.1.1. The hearing took place on 21st October 2022.
"On the morning of the hearing, Mr Benn voluntarily relinquished his licence with the BBBofC.
"In accordance with its Rules and Regulations, the Board determined the allegations following the hearing at which Mr. Benn was legally represented. The allegations of misconduct against Mr. Benn were upheld."
Benn tested positive for the banned substance, fertility drug clomiphene, which increases testosterone levels in males.
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