Just to say about ignoring cheaper bids...
He is also accused of overruling an IT procurement decision in favour of a bid from an acquaintance, despite cheaper bids being on the table.
Not making a judgement about whether or not the deal was... questionable... but the cheapest bid is not always the best one. The sensible choice looks at the value of each bid, and the cheapest bid rarely offers the best overall value.
The guy seems bent as a nine-bob note, and given his position of power there's a good chance he is, but overriding the cheaper bid isn't necessarily dodgy and the fact it went to an acquaintance may be irrelevant.