Pittsburgh attorney Paul Robinson was charged in connection with an alleged cocaine trafficking ring at Penn State University.

Robinson, an equity member at Meyer Darragh Buckler Bebenek & Eck PLLC, is accused of trying to hide drugs and cash in a safe, according to state prosecutors in Pennsylvania. He’s the only non-student facing charges stemming from a trafficking operation that prosecutors say also involved his son, 23-year old Thomas Robinson.

“These are very serious charges and the next steps will be preliminary hearings,” Pennsylvania Attorney General Dave Sunday said in a statement Tuesday.

A Meyer Darragh representative did not immediately respond to a request for comment.

Robinson has spent more than 34 years at the firm, according to his LinkedIn profile, defending products liability, transportation, construction, and other commercial lawsuits. The century-old law firm has roughly 20 lawyers across two offices in western Pennsylvania and a client list that has included Mercedes Benz USA and Jaguar Land Rover North America.

Robinson faces felony charges for tampering with evidence, hindering apprehension, and obstructing the investigation.

Prosecutors have charged 14 defendants in a multi-state trafficking operation they say involved two fraternities, Sigma Chi and Delta Upsilon. They allege that Agostino Abbatiello and Thomas Robinson were the group’s primary suppliers, keeping drugs flowing from New York and Philadelphia to the Penn State campus.