Steven Thell Koecher, 30, of St. George, Utah, went missing after being seen in Henderson, Nevada, on December 13, 2009. In the days before he vanished he made several long, unexplained drives — including more than 1,100 miles on December 10 to northern Nevada and travel near Overton and Mesquite on December 12 — before returning to St. George to buy Christmas gifts. On the morning of December 13 he told two friends he was in Las Vegas and offered to drive back for a church meeting.

The last confirmed sighting is a home security camera image from about noon on December 13 in the Sun City Anthem retirement community in Henderson. The footage shows his white 2003 Chevrolet Cavalier parked at the end of a cul-de-sac and a man believed to be Koecher walking away carrying a folder or portfolio. The car was found abandoned there on December 14 with personal items inside but his wallet, driver’s license, and cell phone missing; the laptop and charger were later found at his apartment.

Searches of nearby desert and residential areas turned up no trace. Investigators have considered job-related travel, foul play, and voluntary disappearance; an early suggested link to another recent Utah disappearance was dismissed. Anyone who saw Koecher’s Cavalier, the man on the footage, or who has information about his movements in southern Nevada on December 12–14, 2009 is asked to come forward.