Marcos Alejandro Velez was 18 when he walked out of his Los Angeles residence on October 23, 2012, and never returned. He left without a cell phone, bank card, or other resources, which has made tracing his movements difficult. Marcos is described as a Hispanic male, about 5 feet 6 inches tall, 120 pounds, with black hair.

The case remains open and is listed with NamUs and other missing persons databases. Authorities continue to seek tips or leads from anyone who may have information about his disappearance.

Has anyone seen or heard from Marcos since 2012?