Mackenzie Keith John De Vos Missing Person Case

Mackenzie Keith John De Vos was a 20-year-old man who disappeared from the Ottawa, Ontario area under circumstances that remain sparsely documented in the public record. The Royal Canadian Mounted Police’s Canada’s Missing database lists November 1, 2017, as his official “missing since” date and identifies Ottawa as the location from which he went missing. The same federal case record explains that Mackenzie’s family reported him missing in July 2018 and told authorities that they had not heard from him since January of that year. This creates an unusual gap in the publicly available timeline: the national record carries November 1, 2017, as the formal missing date, while the accompanying investigative summary indicates that some form of family contact apparently continued into January before communication ceased. No more precise account of Mackenzie’s final confirmed movements, where he was staying, whom he may have been with, or the circumstances surrounding his last known contact has been publicly released in the federal profile.

At the time of his disappearance, Mackenzie was described as a White male with brown hair and blue eyes. He stood approximately 5 feet 11 inches tall and weighed about 139 pounds, with investigators describing his build as slender or thin. His year of birth is listed as 1996, and the database also records “Mackenzie Devos” as an alternate rendering of his name. The public case file does not list clothing, jewelry, scars, tattoos, or other distinguishing characteristics associated with the time he disappeared. Those limited physical details therefore remain particularly important because there is little else publicly available to establish what Mackenzie looked like or how he might have appeared when he was last encountered.

As investigators attempted to determine what had happened after communication with Mackenzie stopped, they apparently checked several official systems that might have revealed later activity. According to Canada’s Missing, investigators were unable to identify any record showing that Mackenzie had used a passport. Checks involving the Ontario Ministry of Transportation also produced no new information, meaning the publicly released record contains no reported transportation-related activity that helped investigators trace him. The Ontario Health Insurance Plan likewise had no updates to provide. Taken together, these checks did not establish that Mackenzie had left Canada, interacted with Ontario’s transportation system in a way that generated useful information, or accessed provincial health services in a manner that led investigators to his whereabouts. The federal record does not disclose additional financial, telephone, social-media, employment, housing, or travel information, so it would be inappropriate to speculate about whether Mackenzie deliberately left the area, experienced an accident, encountered another person, or met with some other circumstance.

The investigation is associated with the Belleville Police Service under reference number DEV-BE18010721, while the national Canada’s Missing case reference is 2018040111. The continued publication of Mackenzie’s profile means investigators have preserved his identifying information so that anyone who recognizes him or possesses information concerning his disappearance can bring that information forward. The public record does not identify a suspect, describe evidence of foul play, or provide a confirmed explanation for why contact with his family stopped. It also does not reveal where he may have gone after his last known period in Ottawa. His case is therefore defined as much by what remains unknown as by what investigators have been able to document: Mackenzie Keith John De Vos was 20 years old when he disappeared from the Ottawa area, his family ultimately reported him missing after months without contact, and subsequent checks of passport, transportation, and provincial health records failed to provide the answer his family was seeking. Years later, the publicly available case information still leaves the central question unresolved—what happened to Mackenzie after he vanished from contact, and where he went afterward.
Last Seen: Nov 1, 2017

Canada's Missing - RCMP case 2018040111