Arturo Morelos was 17 when he was found dead on June 1, 2016, in Los Angeles County. His body was discovered along the train tracks near Carmenita and Rosecrans Avenue in Santa Fe Springs; the Los Angeles County coroner reported multiple gunshot wounds and ruled the manner of death a homicide. The coroner’s formal pronouncement was at 8:42 a.m., and Whittier police had responded to a report of a man down at about 8:30 a.m.

Police launched an investigation that day and pursued leads, but no arrests have been announced. The Whittier Police Department has asked the public for information and set up anonymous tip lines to encourage anyone with knowledge to come forward.

What did Arturo’s last known movements look like to anyone in that area on June 1, 2016, and who might have observed something useful near Carmenita and Rosecrans that morning?