LONDON — Usain Bolt took a momentary break from basking in his historic Olympic sprinting double to fiercely criticize former U.S. athlete Carl Lewis.

Soon after winning gold in the 200 meters at the London Olympics for 100 and 200 titles at back-to-back games, Bolt said Thursday he had "lost all respect" for Lewis after the American was quoted as saying Jamaica's doping controls were not as strong as other countries.

While not making any direct accusations, former 100 and 200 Olympic champion Lewis has said in recent years that Jamaican drug testing procedures might need to be tightened.

The comments brought a stern reaction from Bolt at Olympic Stadium, right after he roared to an unprecedented second 200-meter title at the games. No other athlete has won the 200 twice at the Olympics, although Lewis won the event in 1984 and finished second in the 1988 Games.

With the smile that had been a constant fixture throughout his press conference vanishing from his face, Bolt lashed out at nine-time gold-medal winner Lewis after being asked if he'd like to be compared with him or late sprinting great Jesse Owens.

"I'm going to say something controversial right now. Carl Lewis, I have no respect for him," Bolt said. "The things he says about the track athletes is really downgrading for another athlete to say something like that. I think he's just looking for attention, really, because nobody really talks much about him.

"That was really sad for me when I heard the other day what he was saying. It was upsetting. I've lost all respect for him. All respect."

Asked which specific comments from Lewis made him angry, Bolt replied: "It was all about drugs. Talking about drugs. For me, an athlete out of the sport to be saying that. That was really upsetting for me. Really upsetting.

"To jump up and say something like that. As far as I'm concerned he's looking for attention. That's all."

Lewis, the former 100 and 200 Olympic champion, has raised questions in recent years about Jamaican drug testing procedures.

Following Bolt's performance in Beijing, Lewis told Sports Illustrated: "Countries like Jamaica do not have a random program, so they can go months without being tested. I'm not saying anyone is on anything, but everyone needs to be on a level playing field."

Bolt had already dealt with one question about doping when he was asked Thursday if he could guarantee that Jamaican sprinters – who swept the top three spots in the 200 – were clean.

"Without a doubt," Bolt said, sitting in between silver medalist Yohan Blake and bronze winner Warren Weir. "We train really hard."

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  • Jamaica's Usain Bolt, left, crosses the finish line ahead of Ryan Bailey of the United States in the men's 4x100-meter relay final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. Jamaica set a new world record with a time of 36.84 seconds. (AP Photo/David J. Phillip)

  • Jamaica's Usain Bolt, left, heads for the finish line ahead of Ryan Bailey of the United States in the men's 4x100-meter relay final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. Jamaica set a new world record with a time of 36.84 seconds. (AP Photo/David J. Phillip)

  • Jamaica's Usain Bolt, right, and United States' Ryan Bailey run the final leg of the men's 4x100-meter relay final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. Jamaica set a new world record with a time of 36.84 seconds. (AP Photo/Matt Dunham)

  • Jamaica's Usain Bolt and Great Britain's Mohamed Farah imitate each other after the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. (AP Photo/Matt Slocum)

  • Jamaica's Usain Bolt poses on the podium after receiving his gold medal for the men's 4x100-meter relay during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. Jamaica set a new world record with a time of 36.84 seconds. (AP Photo/Matt Dunham)

  • United States' Ryan Bailey, left, and Jamaica's Usain Bolt, second from right, power ahead after receiving the batons from their team members in the men's 4x100-meter relay final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. (AP Photo/Matt Dunham)

  • United States' Ryan Bailey, left, receives the baton from United States' Tyson Gay, second from left, as Jamaica's Usain Bolt, second from right, receives the baton from Jamaica's Yohan Blake in the men's 4x100-meter relay final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. (AP Photo/Matt Dunham)

  • Jamaica's Nesta Carter, Michael Frater, Usain Bolt and Yohan Blake celebrate as they receive their gold medals for the men's 4x100-meter during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. (AP Photo/Matt Slocum)

  • Jamaica's Usain Bolt, right, and Yohan Blake celebrate their win in the men's 4 x 100-meter relay during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. Jamaica set a new world record with a time of 36.84 seconds. (AP Photo/Anja Niedringhaus)

  • Jamaica's Usain Bolt, right, and Yohan Blake celebrate their win in the men's 4 x 100-meter relay during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. Jamaica set a new world record with a time of 36.84 seconds. (AP Photo/Anja Niedringhaus)

  • Jamaica's Usain Bolt takes the baton to lead in the men's 4 x 100-meter relay during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. (AP Photo/Daniel Ochoa De Olza)

  • Jamaica's Yohan Blake, Usain Bolt, Nesta Carter, and Michael Frater pose with their national flag after their gold medal win in the men's 4 x 100-meter relay during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. Jamaica set a new world record with a time of 36.84 seconds.(AP Photo/Anja Niedringhaus)

  • Jamaica's Usain Bolt prepares to pass United States' Ryan Bailey in the men's 4 x 100-meter relay during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. Jamaica set a new world record with a time of 36.84 seconds. (AP Photo/Martin Meissner)

  • Jamaica's Usain Bolt, right, and Jamaica's Yohan Blake celebrate winning gold and setting a new world record with a time of 36.84 seconds in the men's 4x100-meter relay final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. (AP Photo/David J. Phillip)

  • Jamaica's Usain Bolt, right, and Jamaica's Yohan Blake celebrate winning gold and setting a new world record with a time of 36.84 seconds in the men's 4x100-meter relay final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. (AP Photo/Matt Dunham)

  • Jamaica's Usain Bolt celebrates winning the gold medal in front of the Olympic flame after the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Matt Slocum)

  • Jamaica's Usain Bolt, right, is surrounded by photographers after winning gold in the men's 200-meter during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Lee Jin-man)

  • Jamaica's Usain Bolt celebrates winning the gold medal in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Lee Jin-man)

  • Jamaica's Usain Bolt celebrates his gold medal win in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Anja Niedringhaus)

  • Jamaica's Usain Bolt kisses the track after winning the gold medal in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Lee Jin-man)

  • Jamaica's Usain Bolt, center, is embraced by his mother Jennifer, center left, after he won gold in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/David J. Phillip)

  • Jamaica's Usain Bolt celebrates his gold medal win in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Anja Niedringhaus)

  • Jamaica's Usain Bolt, left, hugs his teammate Yohan Blake after winning the gold medal in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Lee Jin-man)

  • Jamaica's Usain Bolt races to his gold medal finish in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Gregory Bull)

  • Jamaica's Usain Bolt, center, runs to win gold in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. Others runners are, from left, South Africa's Anaso Jobodwana, Jamaica's Warren Weir and United States' Wallace Spearmon. (AP Photo/Matt Slocum)

  • Jamaica's Usain Bolt celebrates his gold medal win in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Anja Niedringhaus)

  • Jamaica's Usain Bolt runs to win gold in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Matt Slocum)

  • Jamaica's Usain Bolt strikes his signature pose after his gold medal win in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Anja Niedringhaus)

  • Jamaica's Usain Bolt runs to win gold in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Matt Slocum)

  • Jamaica's Usain Bolt runs to win gold in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Matt Slocum)

  • Jamaica's Usain Bolt, right, celebrates winning gold in the men's 200-meter final with spectators during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/David J. Phillip)

  • Jamaica's Usain Bolt celebrates winning gold in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/David J. Phillip)

  • Jamaica's Usain Bolt does a press up on the track after winning the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Christophe Ena)

  • Jamaica's Usain Bolt, center, Jamaica's Yohan Blake, left, and Jamaica's Warren Weir celebrate their medals in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. Bolt won gold, Blake silver and Weir bronze. (AP Photo/David J. Phillip)

  • Jamaica's Usain Bolt reacts as he wins the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Christophe Ena)

  • Jamaica's Usain Bolt celebrates as he crosses the finish line to win the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Martin Meissner)

  • Jamaica's Yohan Blake, left, celebrates winning silver with Jamaica's Usain Bolt, who won gold, following the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/David J. Phillip)

  • Jamaica's Usain Bolt, left, gestures after crossing the finish line to win gold ahead of silver medallist Yohan Blake of Jamaica, center, and bronze medallist Warren Weir of Jamaica in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/David J. Phillip)

  • Jamaica's Usain Bolt, third left, reacts as he crosses the finish line to win the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Martin Meissner)

  • Jamaica's Usain Bolt second left, reacts as he crosses the finish line to win the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Anja Niedringhaus)

  • Jamaica's Usain Bolt wins the finals of the men's 200-meter in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Morry Gash)

  • Jamaica's Usain Bolt reacts as he crosses the finish line to win the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Lee Jin-man)

  • Jamaica's Usain Bolt celebrates as he crosses the finish line to win the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Anja Niedringhaus)

  • Jamaica's Usain Bolt gestures as he crosses the finish line to win gold in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/David J. Phillip)

  • Jamaica's Usain Bolt gestures as he wins the finals of the men's 200-meter in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Morry Gash)

  • Jamaica's Usain Bolt celebrates as he crosses the finish line to win the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Anja Niedringhaus)

  • Jamaica's Usain Bolt celebrates as he crosses the finish line to win the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Anja Niedringhaus)

  • Jamaica's Usain Bolt, foreground, crosses the finish line to win gold ahead of Jamaica's Yohan Blake in the men's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Matt Dunham)

  • Jamaica's Usain Bolt crosses the finish line to win the gold medal in the men's 200-meter final during the athletics in the Olympic Park during the 2012 Summer Olympics, Thursday, Aug. 9, 2012, in London. (AP Photo/Mark Baker)

  • Jamaica's Usain Bolt gestures as he wins the finals of the men's 200-meter in the Olympic Stadium at the 2012 Summer Olympics, London, Thursday, Aug. 9, 2012. (AP Photo/Morry Gash)