Guillerno Serna Quintero was 27 when he was last known to be in Nogales, Arizona, about April 18, 2015. Reports say he was crossing into Arizona from Mexico at an unknown location and has had no contact since that time. The Maricopa County Sheriff’s Office received a report of his disappearance on October 21, 2017, and the case remains open.

Quintero is described as Hispanic/Latino and White/Caucasian, about 5 feet 5 inches tall, 150 pounds, with brown hair and brown eyes. He was last reported wearing a black t-shirt, a hat, and gray shoes. Distinctive marks include a neck tattoo reading Maria Madre Mia, Francisco on his right back, TAZ on his right arm, and a scar on his forehead.

What information might help clarify where he crossed into Arizona or who saw him there after April 18, 2015?