The NFL is taking steps to investigate an employee who reportedly defraudes its network with unauthorized fees, according to an internal NFL memo.
Sigma Services Corporation’s attorney said Monday that the NFL “is aware of the allegations and has terminated the employee and is cooperating with the investigation.”
The NFL declined to provide further comment.
The memo was first reported by the Associated Press and ESPN.
It cites two people familiar with the matter as saying that the former employee was a co-worker of former NFL quarterback Matt Cassel, who was fired in February.
Cassel had been with Sigma for more than two years.
Cassel is a former starter for the Philadelphia Eagles who was traded to the Carolina Panthers last offseason.
The move came as Cassel’s agent, Scott Boras, filed a lawsuit in federal court in Philadelphia alleging that the league was negligent in its handling of Cassel and that Cassel was in violation of a nondisclosure agreement he signed when he signed with the Panthers.
Cassell and Boras have since announced their separation.
The lawsuit seeks unspecified damages for “actual and punitive damages, including, but not limited to, attorney fees, and costs.”
The NFL has previously said that Cassell had no knowledge of the unauthorized fees.
The NFL also released a statement on Sunday announcing that it had fired Cassel for allegedly violating the terms of his contract and that the team would “immediately terminate the individual’s employment with Sigma Services Corporation.”
The league said that the investigation was conducted “by an outside law firm” and that “the NFL will not be making any further comment.”
The Associated Press contributed to this report.