Francisco Tyquiengco, an 82-year-old retired U.S. Army Major who lived in Sacramento County with a caretaker, was last seen on November 28, 2021. He had dementia and mobility problems and used a four-footed cane. His silver 2007 Pontiac G6 was located in July 2022 in a remote area of the Mendocino National Forest, about four and a half hours from Sacramento. The car was stuck in mud and still held many of his belongings, including family pictures and clothing. About 700 feet from the vehicle searchers found his jacket, wallet, and identification.

Authorities believe Tyquiengco may have become disoriented after the vehicle became stuck and could have succumbed to the elements; there are indications hypothermia or a fall while trying to walk for help are possible. An extensive search turned up no trace of his body and the case remains open.

If anyone was in that area of Mendocino National Forest in late 2021 or has information about his movements after November 28, 2021, please come forward.