Derek Colburn, 53, vanished from Denver, Colorado after being last seen on January 24, 2016. He is described as biracial (Irish and Hispanic), 5 feet 10 inches, about 160 pounds, with brown hair and brown eyes and a tattoo on his chest; the tattoo’s details have not been made public. Authorities say there were no overt signs of distress or indication he planned to leave, and the clothing he wore that day and his state of mind are unknown.

The Denver Police Department has handled the case and lists it as an open investigation, but few new leads have emerged and the case is now cold. The lack of basic details has made finding answers difficult and the family continues to wait.

If anyone knew Derek, saw him around January 24, 2016, or has information that could help, please come forward to the Denver Police Department.