Zoomed-in satellite images of a rail yard off of the San Bernardino Freeway reveal messages that read “HELP” and “TRAFICO,” which means “traffic” in Spanish. Screenshots of the discovery have circulated on social media, raising concern over whether human trafficking or other danger was happening at the site.

Located at the intersection of Cesar Chavez Avenue and Mission Road, the messages were spelled out in apparent construction debris and read “Help,” “LAPD,” and “Trafico.” There are also signs that appear to spell out “Federal,” “FBI,” and something related to terrorism.