I have in my possession what most likely is a counterfeit money order. Someone responded to my rental listing by claiming to be in Europe but from Saudi Arabia. He's going to be staying in my town and would like to rent my house sight unseen. The deal was his dad would send me a money order to cover the first few months rent and the security deposit plus some spending money which of course I'm supposed to pass on to the renter. A $5500 money order arrived today and of course I strongly suspect that it's a forgery. Should I report this to the local police or is there a specific branch of the federal government that deals with this kind of stuff?