Scammers will often pretend to be an organisation able to recover any money sent to scammers.  Below is an example of the kind of email to look out for:

 

Dear Sir/Madam,

My name is Steve Austine, The head of Anti Crime Unit at Economic And Financial Crime Commission.(EFCC). We have 3 criminals here in our custody, and after all investigation and the confessions of the 3 internet criminals, We find out that you are one of the victim. We got your email from them and they told us how they scammed you and collected money from you. The Federal Government has already froze all their Bank Account that contain Millions of dollars.In order to pay back the money to the victims.
We have instructed to find out from the all victims and pay back what is rightfully belongs to them. All you need to do right now is to get back to us, And give us any proof that they truly collected money from you. I am giving you 100% hope that you will recover back all they stole from you. It does not matter where they contact you from or the name they called for you, All is criminal tricks.
I have Attached here with the copy of my ID card, For you to know whom you are dealing with. It will be good for you if you can get back to us and with any proof that you are truly a victim. The Government is doing everything possible to wipe away all the bad seed from this country. And with your help we will find the rest of them and track them down too. Thank You for your cooperation.

Email:- investigation.unit@presidency.com
Yours Faithfully,
Steve Austine.
THE HEAD OF ANTI CRIME UNIT.
Economic And Financial Crime Commission.(EFCC)