"The case which the warrant relates to is a sealed case," Lewis said Wednesday. "So it's not possible to tell what the real concern is. Nevertheless, NAPI management cooperated with the FBI to furnish material demanded by the agents. All the documents have been transferred to them, and today we are running business as usual."
NAPI employees were confined to an area while FBI agents searched, Lewis said. The search occurred Tuesday and lasted about eight hours.
Lewis added that an FBI agent assured him NAPI would reman open.
It is unclear who the investigation is targeting. An FBI spokesman did not return calls seeking comment.
No arrests were made at NAPI, Lewis said.
Elizabeth Martinez, a spokeswoman for the U.S. Attorney's Office in Albuquerque, said the case is under seal and the office could not comment on it.
NAPI, a sprawling agribusiness entity owned by the Navajo Nation, farms potatoes, alfalfa, pinto beans, corn and winter wheat on 72,000 acres south of Farmington. The farm agency markets its products under the Navajo Pride label.
NAPI generates $400 million in annual revenue, and employs more than 400 people.
Chuck Slothower can be reached at 505-564-4638; firstname.lastname@example.org. Follow him on Twitter @DTChuck.