World heavyweight champion Tyson Fury is suing Britain's boxing and anti-doping authorities over claims that he used a performance-enhancing drug.
The 27-year-old, who beat Wladimir Klitschko to win his world titles late last year, was charged with a doping offence by UK Anti-Doping on June 24 after a urine sample that was taken in February 2015 showed traces of the banned substance nandrolone.
Fury's legal team, however, have claimed that the results of tests on samples that were taken in March and May 2015 were both were contradictory, while Fury's boxing cousin Hughie was also charged.
The legal team for the duo said revealed that "Team Fury" had duly issued proceedings in the High Court.
"The two boxers strenuously deny taking any performance-enhancing drugs. However, during the last five weeks, leaks about these charges have appeared in the press and both boxers have been the targets of continual abusive language on Twitter," lawyer Lewis Power said in a statement.
Fury's legal team are expecting that an interim judgment will be made before the rematch with Klitschko in October.