There’s been a possible sighting of missing Willits person. Riley Hsieh has been missing since the 27 of last month. The Mendocino County Sheriff’s office reported on Friday that a resident in the area thought they had seen him but then couldn’t locate them. Hsieh was last seen on home security cameras as they left their residence on Hawk Terrace in Brooktrails around 11:15 a.m. on Monday, March 27. Anyone with information on Riley Hsieh’s disappearance is asked to contact the Mendocino County Sheriff’s office.