LONDON (AP) — Britain's anti-doping agency says its dispute with former world heavyweight champion Tyson Fury and his cousin, Hughie, is being delayed while a tribunal weighs up an application made by the boxers to exclude certain evidence.

The cousins were charged in June 2016 with breaching anti-doping rules and provisionally suspended by UK Anti-Doping. They challenged the findings and the suspensions were lifted.

Tyson Fury has not fought since beating Wladimir Klitschko in November 2015 to win the WBA, IBF and WBO belts. He is currently without a boxing license after it was suspended by the British Boxing Board of Control over separate incidents of drug use and medical issues. He cannot regain his license until the UKAD hearing takes place.

On Monday, Fury questioned why the UKAD investigation is taking so long, saying it was stopping him from providing for his family and that he was being treated differently to other athletes.

UKAD responded Wednesday by saying it has "pushed for resolution of the charges as quickly as possible" but that the matter was currently in the hands of a national anti-doping panel, which is independent of UKAD.

"All parties are currently awaiting a ruling from the NADP tribunal on an application made by the athletes to exclude certain evidence," UKAD said in a statement. "Once that ruling is received, the matter will proceed to a hearing on the merits.

"It is therefore inaccurate to suggest either that UK Anti-Doping is failing to pursue these charges as quickly as possible, or that Mr. Tyson Fury and Mr. Hughie Fury are being treated differently to other athletes."

Tyson Fury had been hoping to make his comeback in July. Hughie Fury is fighting WBO champion Joseph Parker of New Zealand in Manchester on Saturday in his first shot at a world title.