Hillary Clinton dismissed a Fox News report Monday that suggested the FBI has expanded its investigation to include corruption at the Clinton Foundation, calling the story "irresponsible."

"No, there's nothing like that that is happening," she said during an editorial board meeting with The Des Moines Register in Iowa Monday afternoon.

The report Clinton was disputing alleged the FBI was looking into whether the State Department, under her leadership, offered preferential treatment to major foundation donors with interests before the agency.

Clinton said the report "was quite unexpected and unfounded." She has repeatedly denied suggestions that she mishandled classified information, which was the allegation that reportedly sparked the FBI investigation in the first place.

The Clinton Foundation did not respond to a request for comment on the Fox News report, nor did the Justice Department.