(KRON) -- California Highway Patrol and the San Jose Police Department issued an Endangered Missing Advisory for a missing man. Quoc Nguyen, 56, was last seen Tuesday at about 3 p.m. He is believed to be on foot. Nguyen is 5-foot-6, 140 pounds with gray hair and brown eyes. He was last seen wearing a black jacket and blue jeans. Police did not provide specific information about where he was last seen or why he might be endangered. Anyone who sees him is asked to call 9-1-1.