A whistleblower posted on PubPeer regarding some apparently overlapping images in an article published several years earlier. To the research integrity team there appeared similarities, enough to warrant a request for the original images / raw data from the authors. The authors said they no longer had access to the original data and have denied any editing was made to the images.
A journal received a paper that had previously been retracted from another publisher’s journal as a result of malpractice in the peer review process (a result of reviewer/editor misconduct rather than actions on the part of the authors).
Journal X was contacted by Author A, who claimed that a paper published in that journal ten years previously (by Author B) was plagiarised from Author A’s article in Journal Y published approximately ten years prior to that. Author A requested the retraction of Author B’s paper.