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.

Federal prosecutors charged two Chinese researchers on Tuesday with smuggling a crop-killing fungus into the U.S. last summer — charges that come amid heightened political tensions between the two countries and as the Trump administration moves to revoke visas from visiting Chinese students.

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,