Case Details:Jonathan Caleb Christensen was 31 years old and transient at the time of his disappearance, known to travel between the West Coast and the upper Midwest. He last spoke with his family on March 2, 2019, while in Sioux Falls, South Dakota. He was also known to frequent the Brookings, South Dakota area around the same period. Christensen is a white male, 6 feet 1 inch tall and approximately 150 pounds, with brown hair; his eye color is recorded as brown by one source and black by another, and this discrepancy has not been resolved. No clothing description or personal effects have been publicly documented for this case.

The Sioux Falls Police Department is the investigating agency. The case is catalogued with the South Dakota Division of Criminal Investigation's missing persons registry (Case #MP87150) and with the National Missing and Unidentified Persons System (NamUs #MP87150), under the same case number. Christensen's case remains open and he has not been located. Anyone with information is asked to contact the Sioux Falls Police Department at 605-367-7212.