Where to turn in a money lauderer?

I recently signed up for a MoneyGrams evaluation survey via Craigslist (I know, I know). After being contacted via e-mail and sending my contact information to the fellow (nothing serious--just phone, address, name), I received a check for $2,950.00 in the mail with no note. I then received a text saying to transfer most of it to someone in Texas via MoneyGrams and keep the rest. I looked around because it smelled to high-heaven of scam, and it may be someone trying to launder money. It also may be someone getting the money from me before the check bounces. Where would I report this information?