MIAMI -

The key figure in the NCAA investigation into the University of Miami is claiming he committed perjury when testifying in an unrelated fraud case.

The attorney for a man convicted of check-cashing fraud said in court papers Tuesday that Ponzi schemer Nevin Shapiro told a federal judge in a letter that he gave false testimony during the trial. That man's lawyers are now seeking a new trial.

Shapiro himself is serving a 20-year sentence for operating his own $930 million fraud scam. He is also a former Miami athletics booster whose claims of dispensing impermissible benefits to athletes are key to the NCAA's ongoing probe of the Hurricanes.

Shapiro claims his lawyers at the time knew he would commit perjury and that he was under federal investigation.