WICHITA, Kan. (AP) — A Kansas farmer has sued seed giant Monsanto over last week’s discovery of genetically engineered experimental wheat in an 80-acre field in Oregon, claiming the company’s gross negligence hurt U.S. growers by driving down wheat prices and causing some international markets to suspend certain imports.

The federal civil lawsuit, filed Monday by Ernest Barnes, who farms 1,000 acres near Elkhart in southwest Kansas, seeks unspecified damages to be determined at trial.

U.S. Agriculture Department officials said last Wednesday that the modified wheat was the same strain as one designed by Monsanto to be herbicide resistant that was tested in Oregon and several other states through 2005 but never approved. The USDA has said the Oregon wheat is safe to eat and there is no evidence that modified wheat entered the marketplace.

It’s believed to be the first lawsuit stemming from the discovery. Similar lawsuits are in the works, Barnes’ attorney said, and the cases will likely be consolidated for the purposes of discovery, a process where evidence is investigated and shared among parties.

No genetically engineered wheat has been approved for U.S. farming. Many countries will not accept imports of genetically modified foods, and the United States exports about half of its wheat crop. Since the announcement, Japan — one of the largest export markets for U.S. wheat growers — suspended some imports. South Korea said it would increase its inspections of U.S. wheat imports.

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