It has been a Jamaican love-in since Usain Bolt bestrode the Olympic Games and won a hat-trick of gold medals, but a voice from the past urged caution as the new sprint sensation was heralded as the king of Kingston. With Bolt in the throes of a national party after his homecoming this week, Carl Lewis said that his achievements are questionable.

The American, 47, who won nine Olympic golds, stopped short of accusing Bolt of doping, but his remarks were the most damning yet from a track insider. In an incendiary interview in Sports Illustrated, Lewis said: “When people ask me about Bolt I say he could be the greatest athlete of all time. But for someone to run 10.03 one year and 9.69 the next, if you don’t question that in a sport that has the reputation it has right now, you’re a fool. Period.”

Like many others, Lewis pointed to Jamaica’s perceived lack of testing as the foundation for his suspicion. “I’m proud of America right now because we have the best random and most comprehensive drug-testing programme. Countries like Jamaica do not have a random programme, so they can go months without being tested. No one is accusing Bolt, but don’t live by a different rule and expect the same kind of respect. How dare anybody feel that there shouldn’t be scrutiny, especially in our sport?”

Lewis, who was allowed to compete in the 1988 Games in Seoul having been cleared by the IAAF after being accused of testing positive for banned stimulants, said that he was not singling out Bolt and also questioned the performance of Jamaica’s female sprinters. The IOC targeted the Jamaica sprinters for blood-testing when they were in Beijing and none of them tested positive.

Lewis also expressed his anger that Antonio Pettigrew, the American who testified this year to doping when part of the United States Olympic title-winning 4 x 400 metres relay team in 2000, had kept his job as a coach.

However, it is Lewis’s remarks about Bolt that will cause a storm in Jamaica. Herb Elliott, the Jamaica team doctor and a member of the IAAF antidoping commission, accused the US of peddling “condescending crap” at the Olympics. “They still think we don’t know anything down in Jamaica,” he said.