He claimed that after he had graduated at the top of his chemical engineering class at Baghdad University in 1994, he worked for "Dr. Germ," the pseudonym of British-trained microbiologist Rihab Rashid Taha. He led a team that built mobile labs to create biological WMD Curveball was never actually interviewed by American intelligence and in May 2004, over a year after the invasion of Iraq, the CIA concluded formally that Curveball's information was fabricated. Furthermore, on June 26, 2006, the Washington Post reported that "the CIA acknowledged that Curveball was a con artist who drove a taxi in Iraq and spun his engineering knowledge into a fantastic but plausible tale about secret bioweapons factories on wheels."