Police officers investigating the mysterious disappearance of an American tourist in Scotland are believed to have exhausted all active leads.
Susan McLean, 61, of Monroe Township, Pennsylvania, went missing from the Moness resort in Aberfeldy, Perthshire, on May 17 – exactly two months ago on Friday.
Despite an extensive manhunt and the congressional assistance of U.S. Senator Bob Casey, (D-PA), police in Scotland have so far failed to unearth any evidence that might lead to her whereabouts.
Mrs. McLean was in the middle of a family vacation with her husband, Donald, and sons, Donald Jr. and James, when she failed to return from an evening stroll around the luxury Moness Resort.
Security-camera footage shows the 61-year-old horseback-riding teacher leaving the resort under her own volition at 7:45 p.m.
Other than the sighting of a woman matching McLean’s description walking south along the town’s Crieff Road at around 8 p.m., no trace of the mom-of-two has been found since.
This has now led some locals to fear that she may have had an accident in the craggy hills surrounding the small Scottish village, which sits about 70 miles north of Edinburgh.
Police in Scotland have confirmed to PEOPLE that “enquiries are ongoing.”