The Obama administration is “very confident” that a surprise growth of genetically modified Oregon wheat that set off a trade dispute was an “isolated incident,” according to Agriculture Secretary Tom Vilsack.

While he’s not certain how the genetically modified strain, which is not approved for commercial growth, ended up in an Oregon wheat field, Vilsack said on Bloomberg Government’s “Capitol Gains” that people should not be afraid of such strains sneaking into the food supply.

“Very confident that it did not and does not pose any threat to the food supply. And we’re now, obviously, working with our trading partners to assure them that we have the tests that they can conduct to assure their customers and consumers that the wheat is – is safe and is not in any way, shape, or form impacted or affected by this isolated incident.”