SAN DIEGO (Border Report) -- Two banners reportedly left behind by members of the Sinaloa cartel on Sunday in Los Cabos openly threatened the lives of Americans living or visiting Mexican destinations controlled by the cartel.

The banners, according to several social media posts and trade sites, were taken down quickly.

"It's not true," says Christian Agúndez Gómez, mayor of San Jose del Cabo. "We have investigated the information and determined the banners were never placed."

Agúndez Gómez insisted that an ongoing investigation by the state's attorney general failed to locate the threatening messages linked to organized crime.

Cartels have been known to hang "narco-banners" on bridges and overpasses with threatening messages aimed at government officials or their rivals.

"There are n

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