Ronald Kuetemeier, 57, was last seen at his Evergreen, Colorado home about 9:15 a.m. on June 14, 2013. Family members returning later that day found the house empty and discovered Ronald’s personal items intact: cell phone, identification, cash and credit cards. The family’s vehicles were all at the residence, so it is believed he left on foot.

An IT professional and German native who had become a U.S. citizen, Ronald was described as an avid runner who often used the trails at nearby Elk Meadow Park. Searches of the park and surrounding areas produced no sign of him. Investigators noted he may have been in a distressed state of mind but said there was no evidence of foul play. He is listed as a white male, 5 feet 10 inches, about 160 pounds, with graying hair, green eyes and wire-rimmed glasses; he may have been wearing a blue polo shirt, khaki shorts and tennis shoes when last seen.

The case remains an active missing person investigation with the Jefferson County Sheriff’s Office. If anyone saw Ronald on June 14, 2013, or has information about his habits or where he ran that morning, please come forward.