(CNN) -- The only criminal charge to come out of the academic fraud scandal at the University of North Carolina has been dropped. Orange County District Attorney Jim Woodall announced on Thursday that ex-professor Julius Nyang'oro would no longer be facing a felony fraud charge. He was accused of taking money to teach classes that didn't exist. Woodall said the decision was based on Nyang'oro's cooperation, both with the criminal investigation, which is over, and the university-sanctioned investigation being done by former federal prosecutor Ken Wainstein. Wainstein was hired this year by UNC to do another internal investigation, since past investigations pinning the sole blame on Nyang'oro have not satisfied questions and curiosity from the community and from critics of UNC who think the scope of the fake classes was much bigger than UNC admits.
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Felony fraud charges dropped against professor, DA says
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Professor was accused of taking money to teach classes that didn't exist
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UNC pushed athletes toward the fake classes, whistle-blower says
"It's quite likely that if it is shown that this is a long-term systematic scheme on the part of the university that @placeholder will need to vacate wins," Gurney said.