Former DUP minister Jonathan Bell's written evidence for the RHI inquiry has been published online.
It was Mr Bell's explosive claims against DUP leader Arlene Foster and party advisers in December 2016 which turned up the temperature on the green energy scheme scandal.
He broke ranks to speak to BBC broadcaster Stephen Nolan and call for a judge-led public inquiry into RHI.
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On Thursday he will appear before that inquiry where he will be asked in minute detail about his time as Enterprise Minister when the scheme was closed and his claims over how that was handled.
Questioning will focus on the former Enterprise Minister's claim that two senior DUP figures "were not allowing this scheme to be closed" as costs spiralled out of control in autumn 2015.
The men at the centre of the allegations are Timothy Johnston, who was then the special adviser to First Minister Peter Robinson, and is now the DUP's powerful chief executive; and Dr Andrew Crawford, an adviser to the then Finance Minister Mrs Foster.
Mr Bell claimed they secretly tried to "cleanse the record" of references to her. The alleged attempts to alter papers were made "without my knowledge, without my consent" and an email trail exists to prove his claim, he has told the inquiry.
Both Mr Johnston and Dr Crawford deny the allegations.
Mr Bell will appear before the inquiry on Thursday.
You can read his written statements here: