(KRON) -- A Silver Alert has been issued Thursday afternoon for a missing San Jose man, California Highway Patrol announced on social media. Yongchang Chen, 66, was last seen on Thursday, Sept. 26 around 8:17 a.m. in San Jose. Chen is described to be 5-foot-8 and 150 pounds with black hair and brown eyes. He was last seen wearing a dark shirt, green vest, dark pants, gray shoes and black ballcap. A’s staff gifts fans dirt from Oakland Coliseum to bring home Photo of Yongchang Chen (California Highway Patrol) Chen is believed to be on foot, authorities said. Anyone who locates Chen is asked to call 911.