WATCH: Ilhan Omar denies feds have contacted her after border czar Homan confirms 'criminal' investigation

Rep. Ilhan Omar, D-Minn., told Fox News Digital she has not been made aware of any criminal investigation into her after White House border czar Tom Homan said Sunday that the Department of Homeland Security (DHS) is investigating allegations involving Omar.

"No, they have not," Omar said after being asked if the DHS had reached out to her about any investigation.

Homan confirmed that there is an "ongoing criminal investigation" into the Minnesota Democrat on "The Sunday Briefing." Homan declined to give comment on whether the federal government had evidence that Omar committed immigration or naturalization fraud — a popular allegation against Omar that has prompted numerous calls for a probe. Homan also declined to give specifics on what the investigation is centered on.

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When asked directly whether Homan was confirming an investigation involving Omar, Homan replied, "I'm confirming that ICE is, yeah — look, I said months ago that there's something that's been reported and needs to be looked at."

Fox News Digital asked Omar for her response to the allegations, particularly the claim that she married a man who critics allege is her brother as part of a scheme to obtain citizenship in the U.S.

"The right wing has always had this s--- going, so I don't really worry about it," Omar said about the allegations.

Omar has repeatedly denied claims that she married her brother, as well as claims that any investigation involving her has been opened by DHS or the Justice Department. There has been no public evidence available to confirm an open investigation into Omar.

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Vice President JD Vance claimed in May that the Justice Department was looking into allegations against Omar — both related to the claim she married her brother and fraud after her amended financial disclosure forms and steep drop in net worth caught national attention.

Homan’s confirmation of an investigation into Omar comes after DHS Secretary Markwayne Mullin alluded to the idea that the DHS was investigating Omar, bringing up her alleged marriage immigration scheme.

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"There may be more to this, the whole family migration and possibly some illegal activity for them to come to the United States to begin with. ... If we can prove it, that you shouldn't have been here in the first place, we will deport you," Mullin said on the podcast.

Omar is a naturalized citizen, but Homan said there is a denaturalization process for cases of proven immigration fraud, which he claimed had been done "many times."

"Denaturalization is a process," Homan said. "It’s a very serious process, so if someone lies through that process to become a citizen, and we can prove they, in fact, lied or misrepresented themselves, we can absolutely denaturalize them."