From the Pittsburgh Tribune-Review:
Although the article cleared the peer review process, the editor decided to run the article through the Cross Check database, a compendium of previously published research. When the check verified her suspicions, the editors checked Weber's other articles.
"The machine caught it. The system worked," Spilka said
there was a high level of copying:
The Office of Research Integrity said Weber took 90 percent of the text of one article and 66 percent of the text from another article and incorporated them into his work. Authorities said he also plagiarized significant portions of two grant applications filed with the National Institutes of Health.