Some of the information used to justify the U.S. invasion of Iraq came from a discredited informant codenamed "Curveball" by CIA, who falsely claimed 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. Despite warnings to CIA from the German Federal Intelligence Service regarding the authenticity of his claims, they were incorporated into President Bush's 2003 State of the Union address and Colin Powell's subsequent presentation to the UN Security Council.[155][156]