PHILADELPHIA (CBS) – La Salle University’s former food service director has been charged with funneling millions of dollars of the institution’s money over a 20+ year period into a bogus food company authorities say he controlled.

The Philadelphia district attorney’s office says Stephen Greb, 58, of Blue Bell, Pa., surrendered Tuesday morning. Tasha Jamerson is a spokeswoman for the district attorney’s office:

“He has officially been charged with theft, theft by deception, forgery, tampering or falsification of records, and other related charges. It’s alleged that he stole more than $5 and a half million from La Salle University.”

Greb was La Salle’s director of auxiliary services, which included on-campus catering, as well as the campus store, printing and mail distribution. He was fired last June.

He had worked for the university in East Germantown since 1984.

University officials discovered the scheme earlier this year after an invoice control system detected irregularities in payments to a fictitious company which was allegedly run by Greb.

La Salle University Spokesman Joe Donovan released a statement that read in part:

“There’s a feeling of shock and betrayal. It’s a longtime and highly trusted employee who just exploited a vulnerability in the system.”

Reported by Mark Abrams, KYW Newsradio; Elizabeth, CBS 3.