The Mendocino County Sheriff’s office is asking for the public’s help in the search for a missing person from Willits. The search for Riley Hsieh has been ongoing since they were reported missing on Monday in the Brooktrails subdivision. Search teams from several agencies and counties have been involved in the search to no avail. Mendocino County authorities are asking anyone who lives in the area with video security cameras to contact them about forwarding any footage they might have. Hsieh is believed to be at risk due to the nature of his disappearance.