Alan Tigong Duque was 19 when he vanished from Daly City, California, on June 17, 1987. He was described as 5 feet 5 inches tall, 120 pounds, with black hair and brown eyes. At last sighting he wore a dark blue jacket, a white shirt, Levi’s jeans (waist 33) and size 9 1/2 shoes. A tattoo reading LVN on his right leg is a distinguishing feature.

Few details are available about the circumstances of his disappearance, and the case has produced no significant public leads. It remains an active missing persons investigation handled by the Daly City Police Department.

If anyone has information about Alan Duque or remembers seeing him around June 17, 1987, please contact the Daly City Police Department.