Robert Svend Nauman was 72 when he was last seen in Toronto, Ontario, on April 28, 2007. He is described as a Caucasian man with a fair complexion, grey hair, brown eyes, a slender build, 5 feet 8 inches tall and about 181 pounds. The Niagara Regional Police Service handled the investigation.

As days and years passed, few leads developed and the formal investigation remained open. The lack of concrete evidence has left his official status as a missing person unchanged.

Did anyone in the Toronto or Costa Rica communities have contact with Robert after April 28, 2007, or know of places he frequented before he disappeared?