They likely lost it to the widow of the late
Kwame Ogbomna, head of the Nigerian Banking Assembly, who needed them to deposit millions of in his estate bank account to an an overseas account because Nigerian law would not allow her to do it herself.
Well, I can certainly send him fourteen or more different email addresses for her if he thinks that might help. :=)
I got $4mil from her. I lost it on Lake Mead, NV when the boat overturned. (GPS cords were recorded.)
So there might actually have been something going on behind the archetypical Nigerian spam scam, it was a scheme to get Nigerian money out of Nigerian control?
Never underestimate how weird human schemes can get.