Michael Johnson, right, has disgreed with Steve Cram, left, over reaction to Justin Gatlin's victory ©BBC

Former Olympic champion and world record holder Michael Johnson claims there are "big problems" to address in athletics as fallout continues over Justin Gatlin's World Championship 100 metres victory here.

The American, winner of four Olympic and eight world titles before retiring from the sport in 2000, was also involved in a lengthy debate with fellow athlete Steve Cram, now the lead commentator on BBC Television.

It followed Gatlin's return from two separate doping suspensions to win a race which had been expected to end in victory for Jamaican Usain Bolt in the last individual final of his career.

Gatlin triumphed ahead of fellow American Christian Coleman in 9.92sec as Bolt could only finish third.

His win was heavily booed by a 60,000 crowd before the International Association of Athletics Federations (IAAF) denied claims they moved the timing of her medal ceremony yesterday until before the start of the evening session in an attempt to avoid a similar reaction.

"With medals being awarded years later due to drug cheats and medal ceremonies being moved to avoid booing, athletics has big problems!" Johnson wrote on Twitter today.

It followed him accusing Cram, the 1983 world 1500m champion and former world record holder in the mile, of hypocrisy after singling out Gatlin over other drugs cheats.

"Why don't you mention all of the other people?" Johnson said during a discussion broadcast on the BBC.

"Because how is it that Justin Gatlin stands out so far above in your mind and other people's mind above all the other drug cheats?"

Cram, the former chairman of English Institute of Sport and who has worked as a mentor and advisor for British Athletics, has criticised a "witch-hunt" against Britain's four-time Olympic gold medallist and six-time world champion Sir Mo Farah.

He responded to Johnson by claiming he had referenced other drugs cheats such as American sprinter Marion Jones and Moroccan-born Bahraini middle distance runner Rashid Ramzi.

"I've only ever tried to deal in facts." he said.

"I don't know Justin Gatlin very well; I don't know if he's a nice guy or a bad guy. 

"The other people that I might suspect and there might be a few here who are cheating, I can't say anything until they've failed a test and they've been given a ban."

Gatlin received a two-year ban, reduced on a appeal, after a positive test for amphetamines in 2001 before a second suspension, reduced to eight and then four years, after a failure for testosterone in 2006.

Justin Gatlin, left, gained a shock win over Christian Coleman and Usain Bolt, right ©Getty Images
Justin Gatlin, left, gained a shock win over Christian Coleman and Usain Bolt, right ©Getty Images

Johnson responded by claiming the athletics world has done "a poor job of educating because we created a story that was not accurate".

He added: "We created a villain and hero story that created most of this.

"The fact that Justin Gatlin was in this Stadium in 2012 [for the Olympics] and no one booed him is proof of that. 

"In 2015 when Gatlin was starting to get close to Bolt and people were getting fed up of the drug situation, we created this narrative and we didn't do a good job of educating people about all of the drug cheats in the sport and how they've gotten away with it. 

"To your point, what the Federation has not done, we didn't educate them about that - we gave them a representative."