'FBI' scam - $10,500,000 all mine if 'legit'. Amateurs!

From: Federal Bureau of Investigation
Dept: Anti-Terrorist & Monetary Crimes Division
Office: Washington, D.C. Headquarters

ATTENTION:

We hereby inform you that a bank have transferred huge sum worth Ten Million Five Hundred Thousand United States Dollars into an American Bank with your name as the beneficiary.
Therefore they used what is known as Secret Transit Diplomatic Payment (S.T.D.P) to do this transfer and they are currently awaiting a confirmation from you for final crediting to your account.
Our findings shows that this method of transfer was used in the past to finance terrorist acts, so there is need to correct this problem now to avoid you getting into trouble.
The FBI foreign bank commission have stopped the transfer on its way to debit your reserve account.
We have decided to contact you directly to acquire the proper document and prove from you in order to ensure that the money you are about to receive is clean and legit.
The bank has been instructed not to release the funds to anybody until we have finalized our investigations. Note that the funds will not be credited into your personal account until the needed document is provided.
Your duty is to prove to us that the funds you are about to receive is a clean and the only way to prove that is by sending us this Diplomatic Immunity Seal Of Transfer (DIST). You are to forward this document to us immediately, we will direct you to where you will obtain it so that your funds can be released. This document is to be issued to you from the location of the foreign bank to affect your funds transfer.

Guarantee: Funds will be released upon confirmation of the DIST document.
--------------------------------------------------------------------
We have confirmed that the amount required to procure your document which is called the Diplomatic Immunity Seal of Transfer (DIST) will cost you a total of Five Hundred and Fifty Dollars only and the fee should be paid directly to the PAYMENT OFFICE IN NIGERIA via Western Union Money transfer.
You have hereby been authorized /guaranteed by the Federal Bureau of Investigation to commence towards completing this transaction, as there shall be NO delay once payment for the (DIST) DOCUMENT has been made to the authorized agent.

FEDERAL BUREAU OF INVESTIGATION