Although Aiwass originally just came to retrieve some equipment, he suddenly realized...
...he seemed to have obtained the evidence he needed.
Minister Griffiths was indeed quite cautious.
He destroyed all incoming letters as soon as they arrived and left no evidence at home; the ritual magic circles in his basement only proved he had tried to summon demons, but nothing else—it wasn't illegal to simply try, after all, if one didn't succeed. Minister Griffiths himself did not possess the rank of Transcendence to explain any rituals he might have conducted.
And from the Antimony Kingdom's side, there was clearly no provision of abnormal funds.
As the Minister of Commerce, just like his predecessor, he had all his assets in Antimony. Only when he decided to flee could he truly cash in on these properties.
Of course, if he didn't live to escape, then all this would be equivalent to a worthless promise.