Returning to Powell’s claims that Iraq had “mobile production facilities used to make biological agents”, this allegation came from a single source, code-named “Curveball”, whom the CIA had never actually interviewed. The CIA had rather relied on German reporting, which had come complete with warnings that he was a drunk and that his claims couldn’t be corroborated. On May 30, 2003, several months after the invasion of Iraq, Bush declared that U.S. forces had “found the weapons of mass destruction”. They had “found biological laboratories”, he lied. “Remember when Colin Powell stood up in front of the world, and said Iraq has got laboratories, mobile labs to build biological weapons?” He answered his own question, “[W]e’ve so far discovered two”, adding that “we’ll find more weapons as time goes on”. He then made a vain attempt to belittle his critics by saying, “But for those who say we haven’t found the banned manufacturing devices or banned weapons, they’re wrong. We found them.” Inconveniently for the administration, a British team investigated the trailers and concluded that nothing of the sort had been found. One biological weapons expert told The Observer, “They are not mobile germ warfare laboratories. You could not use them for making biological weapons. They do not even look like them. They are exactly what the Iraqis said they were—facilities for the production of hydrogen gas to fill balloons.” As it turned out, it was the U.K. that had sold the system, known as an Artillery Meteorological System, or “Amets”, to Iraq in 1987.