Ominous “HELP” messages carved onto debris in Los Angeles have raised alarm among social media users. Zoomed in Google Maps satellite images of a rail yard off of the San Bernardino Freeway reveal messages that read “HELP” and “TRAFICO,” which means “traffic” in Spanish.

Police say there is no evidence of trafficking or criminal activity after messages written with pipes and wood went viral on social media.

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.