The NFL filed a motion in U.S. District Court on Friday in hopes of having a special investigator appointed to oversee attorneys and doctors representing the players who agreed to a $1 billion settlement with the league over concussions.
The motion, which was obtained by CNN's Homero De la Fuente, alleges there has been "deep and widespread" fraud committed by lawyers, doctors and players in response to complaints that payments have not been made fast enough.
Specifically, the league alleged a law firm representing more than 100 players "coached" them on how to answer questions during their neuropsychological evaluations.
The league also alleged a neurologist submitted 21 medical reports on retired players that featured identical vital signs for all of those examined.