Anthony Joshua has argued for more stringent regulations to be put in place when fighters fail doping tests in the wake of Jarrell Miller’s meagre six-month ban.

Joshua was set to defend his WBA, IBF and WBO heavyweight titles against Miller on June 1 at Madison Square Garden, only for the Brooklyn challenger to reportedly test positive for a number of performance enhancing drugs.

Andy Ruiz Jr has stepped in as the replacement for Miller, whose six-month suspension from the WBA has raised the latest debate about whether enough is being done to combat illicit substances in the sport.

Joshua told Press Association Sport: “Maybe there needs to be more of a situation where it’s not just a random six-month ban.