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.