In October 2009, the medical records of the victims of the 1996 Pfizer Trovan clinical trial could not be found at the Kano State Ministry of Health nor at the Infectious Diseases Hospital (IDH) where the trials were conducted, according to the state's Attorney General and Commissioner for Justice Barrister Aliyu Umar, shortly after Umar confirmed that the state government had received $10 million from Pfizer as part of the $75 million settlement of the protracted dispute. The Nigerian government conducted their own investigation, whose report was kept secret for five years with the only three printed copies being lost.