"This Runner Is a Hitman. His GPS Watch Tied Him to a Mob Boss Murder The health-conscious assassin was picked up for another murder, then investigators found his Garmin... A British runner, cyclist, and mob hitman has been convicted for the murders of two rival gangsters, in part, because of his GPS watch. ...Though police already suspected Fellows in Kinsella’s death, it was his Garmin Forerunner that linked him to Massey’s unsolved 2015 murder. While detectives were investigating Fellows, they came across a photo of the suspect wearing his Garmin Forerunner during 2015’s Great Manchester 10K (he ran 47:17, pictured above) two months before the murder of Massey that July. Detectives then located the device at Fellows’s home and checked its GPS data for files that could link him to Massey. They found that the runner plotted these murders with the attention and precision of any serious athlete, and accordingly, he recorded his recon missions..." https://www.runnersworld.com/news/a25924256/mark-fellows-runner-hitman-murder/