Anthony Thomas Mike Thomas Fake checks for items advertised on Craigslist Van Buren AR Arkansas

I'm selling a boat on Craigslist.  Person named Thomas contacted me by text message.  Offered to pay full price plus extra money to cover shipping.  Recieved a check sent priority mail through usps.  Check was made out to me for twice the amount of the boat I am selling.  Bank name was real and so was the routing number.  In the memo section it reads payment approved.  

This man wants you to deposit the fake check and let him know when this is done so he can have his bank release the funds.  At this point he then says his bank needs your routing number and account number.  This is how he scams people out of their personal information and money.