I put an ad on Craigslist looking to keep children in my home. I got a reply from this person claiming he would pay me $300-350 to keep his 2 year old daughter for 3 hours a day M-F. Then before I knew it he had sent me a check for $2700 and told me I was to cash the check, take $500 for my pay and then western union the remaining amount to his "housing agent". I did not cash the check and I emailed him and told him I was not going to cash the check and I wanted nothing more to do with him. Now he has threatened to turn me into the FBI. I know this is a scare tactic, but I need to know what I should do if anything.