Rochester, MN (KROC-AM News) - The federal government has taken over the prosecution of a Rochester man in what the Rochester Police Department has described as a historic cybercrime case. Stock imageCybertip Led to "Historic" Rochester Police InvestigationThe charges against Timmerman are the result of an investigation conducted by the Rochester Police Technology Forensic Unit. Court documents indicate Rochester police first learned of Timmerman's alleged criminal activity through a cyber tip received in October 2024. Get our free mobile appCourt documents state that the investigation identified 169 victims who resided in Olmsted County and elsewhere in the United States. His next court appearance in federal court is scheduled for October.