'Erratic fluctuation of Fitbit data' minutes before Ashling Murphy's death tipperarylive.ie - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from tipperarylive.ie Daily Mail and Mail on Sunday newspapers.
Primary school teacher Ashling Murphy, 23, was attacked and stabbed 11 times in the nick as she jogged along the Grand Canal near Tullamore, in Ireland's County Offaly