Police are investigating a report of recording devices found in guest rooms at a Minneapolis hotel. The cameras were discovered at the downtown Hyatt Regency on Saturday. WCCO's Esme Murphy spoke with a cyber-security expert who warned: Situations like this are both common and hard to detect. Minneapolis Police continue to release few details about the investigation, including what exactly they found and in how many Hyatt hotel rooms. Much of the information in a police report has been redacted. "It's scary stuff," said Mark Lanterman, Computer Forensic Services. Mark Lanterman is a former investigator for the U.S. Secret Service Electronic Crimes Taskforce. He's also the Chief Technology Officer for Computer Forensics, a cyber-security firm whose clients include the Hennepin County Sheriff's Department and the Ramsey County Attorney's office. "Does this shock you?" Esme Murphy asked. "No, it doesn't shock me," Lanterman replied.