weeks after Troon began his investigation, that Mrs Ouko mentioned a possible dispute over the Kisumu Molasses Project. Although Troon's final report to the Kenyan authorities, delivered in August 1990, was not conclusive it did recommend further investigation into Ouko's murder and in particular 'enquiries and further interviews' in respect of Hezekiah Oyugi, a Permanent Secretary in Kenya's Internal Security Department; James Omino, an MP for Kisumu Town and a political opponent of Ouko at the 1988 election; and Nicholas Biwott, the Minister for Energy. However, Troon's investigation has since been criticised as being "fatally flawed" and has been further undermined by subsequent investigations and disclosures, not least amongst these that Airaghi had been convicted of attempted fraud and deception in Italy in 1987. In particular, Troon has been criticised for his reliance on the testimony of Domenico Airaghi and Marianne Briner-Mattern, his failure to investigate their background, his failure to read important evidence contained in the "Molasses File" (the Kenyan government's file recording all correspondence and minuted decisions relating to the project), and his failure to interview any US Government officials regarding the Washington trip. In the absence of any direct evidence as to who was responsible for the murder of Ouko, Troon based his entire theory on the basis of establishing a motive for the killing. The Washington trip In relation to the Washington trip there appears to be no evidence of a dispute, or for the supposed cause of a dispute – that Ouko had met President Bush Snr. and not with President Moi and that this had caused a row between Ouko, Moi and Biwott. President Moi did meet with President Bush Snr. as photographic evidence attests. No member of the Kenyan delegation at the time or since recalled any dispute. Nor was there was a meeting between Ouko and President Bush Snr during the trip to Washington, the reason cited for the alleged dispute. President Bush's official diary makes no mention of it; the US State Department have stated that it did not take place; no member of the delegation was aware or any such meeting, and further investigation conducted into Ouko's murder by the Kenyan police in 1991/92 found that, "There is no evidence to confirm that Ouko while in Washington met President Bush". In May, 2013, Kenya's Truth, Justice and Reconciliation Commission (TJRC) published a report which concluded, under the section Political Assassinations,