Aaron Sibarium of the Washington Free Beacon reports more bad news for the diversity, equity, and inclusion crowd.

The chief diversity officer of the University of Wisconsin-Madison, LaVar Charleston, who also teaches at the university’s school of education, has a decades-long track record of research misconduct, according to a complaint filed with the university on Wednesday and a Washington Free Beacon analysis. That misconduct includes presenting old studies as new research, which he has done at least five times over the course of his career.

The complaint, which was filed anonymously, implicates eight of Charleston’s publications, many of them coauthored, and accuses him of plagiarizing other scholars as well as duplicating his own work. It comes as the university is already investigating Charleston over a separate complaint filed in January, alleging that a 2014 study by him and his wife—Harvard University’s chief diversity officer, Sherri Ann Charleston—is a facsimile of a study he published in 2012.

“This is an extraordinary case of serial misrepresentation and deception,” said Peter Wood, the head of the National Association of Scholars and a former associate provost at Boston University. “The closest analogy would be someone who sells the same real estate to five different buyers, all of whom are unaware of the others.”

In January, Charleston won a lifetime achievement award for “excellence in higher education.” The university trumpeted the award in a press release, praising his “unwavering dedication to creating inclusive environments in academia” and noting his “wealth of academic accolades.”

Charleston’s CV, however, appears to have been inflated by duplicate publication, the practice of publishing the same research in multiple journals without attribution. In 2014, for example, he published a pair of papers in two separate journals—the Journal of Diversity in Higher Education and the Journal of Progressive Policy & Practice—that are near-verbatim copies of each other.