Jamie Petrone, a longtime employee of the Ivy League school, began ordering tablets under the school’s name in 2013. From there, she would take the tablets and sell them to an undisclosed business in New York state.

The money from the transactions would then be wired to her, with Petrone garnering enough money to purchase luxury cars and several lavish estates. Authorities said that the scam lasted for eight years before she was caught.

Petrone pleaded guilty to charges of wire fraud and filing false tax returns for the 2013 to 2016 tax years. According to the Hartford Courant, she claimed the purchased equipment that she sold off as business expenses. The filings, along with her refusal to file any federal tax returns from 2017 to 2020, cost the U.S. Treasury more than $6 million.

Prosecutors allege that all of the purchases made by Petrone over the course of the scam were “estimated to be in the tens of millions of dollars,” with little of the purchased equipment given to Yale.

According to a statement published in the Yale Daily News, fellow employees reported discrepancies with Petrone’s purchases. In the statement, the school thanked local law enforcement for their work in the investigation.

“Yale initially alerted authorities to evidence of suspected criminal behavior last year and fully cooperated throughout the investigation,” Yale spokeswoman Karen Peart wrote. “Since the incident, Yale has worked to identify and correct gaps in its internal financial controls.”

The U.S. Department of Justice said that as a result of her guilty plea, Petrone will have to forfeit more than $560,000 from her bank account. She will also have to forfeit six of the cars she purchased and set up liquidations for three properties in Connecticut and one in Georgia.

Petrone faces up to 30 years in prison and will be sentenced in June. She was arrested on September 3, 2021, and was released on a $1 million bond as she awaits sentencing.

Assistant U.S. Attorney David Novick will prosecute the case, although his office declined to provide further comment to Newsweek. An attorney for Petrone could not be immediately found.

Update 3/30/22, 1:15 p.m. ET: This story has been updated with additional information.