Mark Aaron Kilner, 46, was last heard from on April 16, 2012, in North San Juan, California. Family who lived out of town became concerned after not hearing from him for some time; a friend who checked on him found his wallet and car keys inside his home but Kilner himself was missing.

An extensive search and rescue operation was launched in May 2012 but turned up no trace. He is described as a 5 feet 11 inches Caucasian male, about 165 pounds, with brown hair and blue eyes. The circumstances of his disappearance remain unclear and the case is unsolved.

If anyone knew Mark’s routines, last known movements, or saw him in North San Juan in April or May 2012, please share information with the investigating agency.