A Silver Alert has been issued for 75-year-old Hour Chea in Sonoma, Mendocino, and Humboldt Counties. Chea was last seen Sunday around 10:30 p.m. in Larkfield, Sonoma County, driving a white 2016 Toyota Prius license plate number 7WEX686. He is 5′ 4″, 150 pounds, bald with brown eyes, and was wearing a light blue hoodie, blue jeans, and sandals. If seen, call 911.