The biological pathogen federal authorities accuse two Chinese nationals of smuggling into the U.S. was not likely an act of "agroterrorism," according to experts.

The noxious fungus is known to cause "head blight," a disease that impacts barley, rice, wheat and maize and causes economic losses worth billions of dollars each year, according to a release.

Two Chinese researchers were charged with smuggling a fungus classified “as a potential agroterrorism weapon” that could decimate crops and impact human health into the US last summer in a wad of tissues,