Any witnesses to him taking the money?
How much money?
Fraud? I don not know. If you set clear terms for the loan (repayment schedule, interest rate, etc) then it sounds more like a civil dispute. Prosecutors are loathe to bring charges when the underlying issue may will have a civil flavor: increases the chances of losing.
I suggest you consult a local attorney to explore pursuit of a breach of contract action. You can trace the cashier's check through the issuing bank, and you and your son can be corroborating witnesses.
After, and ONLY AFTER you are successful in any civil action should you push hard for criminal charges.
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Former Virginia Prosecutor
Thanks for the bonus!
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