Robert Grant Alexander, 57, of Box Elder, Montana, was last seen April 25, 2013. His vehicle was found shortly afterward on the Rocky Boy’s Indian Reservation in the Sandy Creek area, on a road that leads toward Mount Baldy. Pajama bottoms and shoes were inside the car, but there was no sign of Alexander himself.

Searches of the surrounding country, including the Bear Paw Mountains where he was known to be familiar, turned up no significant clues. Before he disappeared Alexander reportedly had been acting paranoid and unusually, and he relied on medical aids for respiratory problems and had limited mobility—factors that make it unlikely he simply wandered off on foot. Those circumstances and the personal items left in the vehicle have led authorities to suspect foul play, though other possibilities have not been ruled out.

No definitive leads have emerged and the case remains unsolved. Anyone who knew Robert, saw him on or after April 25, 2013, or has information about the Sandy Creek or Mount Baldy area is asked to come forward.