Rafid Ahmed Alwan, known by the Central Intelligence Agency codename "Curveball", is an Iraqi citizen who defected from Iraq in 1999, claiming that he had worked as a chemical engineer at a plant that manufactured mobile biological weapon laboratories as part of an Iraqi weapons of mass destruction program. Alwan's allegations were subsequently shown to be false by the Iraq Survey Group's final report published in 2004.
- Jonathan Owen, Man whose WMD lies led to 100,000 deaths confesses all, The Independent, 3 April 2012.
- BBC Online Iraq war source's name revealed, BBC News 2007-11-02
- The Record on CURVEBALL: Declassified Documents and Key Participants Show the Importance of Phony Intelligence in the Origins of the Iraq War, National Security Archive, The George Washington University, 2007-11-07, accessed 27 April 2009
- Bob Drogin Determining the Reliability of a Key CIA Source Nieman Foundation for Journalism at Harvard University, Spring, 2008, accessed 27 April 2009