The Statute of Limitations is from the time the company or individual became aware of the DAMAGES. Not from the time that someone decided or felt it was Fraud. That’s why you have 4 years to figure it out and file a RICO action following the discovery. After that you are SOL.
In RICO conspiracy, the statute of limitations may be extended to within five years from the last date the defendant evidenced his agreement to participate in the RICO conspiracy."