Republican presidential hopeful Ted CruzRafael (Ted) Edward CruzCruz says Cambridge Analytica assured him its practices were legal Dem battling Cruz in Texas: ‘I can understand how people think this is crazy’ Overnight Tech: Facebook faces crisis over Cambridge Analytica data | Lawmakers demand answers | What to watch for next | Day one of AT&T's merger trial | Self-driving Uber car kills pedestrian MORE on Sunday said GOP front-runner Donald TrumpDonald John TrumpKoch-backed group launches six-figure ad buy against Heitkamp Anti-abortion Dem wins primary fight Lipinski holds slim lead in tough Illinois primary fight MORE owes “hundreds of millions or even billions” in unpaid loans.

“If you look at his financial disclosure, he owes at least $480 million right now, and it could be billions,” Cruz said on “Fox News Sunday.”

The Texas senator also said it was hypocritical for Trump to attack him due to his failure to disclose two bank loans during his 2012 run for Senate.

“He knows this loan story is complete nonsense,” Cruz said. “It’s also the height of chutzpah for someone who owes hundreds of millions of dollars, if not billions of dollars, to attack Heidi and me because we put our life savings into running for Senate.”

“And by the way, with loans, when Heidi and I take loans, we pay them back,” he added. “Donald has declared bankruptcy four times. So for him to sit there owing hundreds of millions or billions or who knows and to criticize Heidi and me for putting our entire net worth into the campaign is astonishing.”

Cruz also said he has not been attacking Trump in the days leading up to the Iowa caucuses.

“What he has changed to doing is insulting me every day, you know, attacking me,” he said of Trump.

When pressed by host Chris Wallace whether bringing up Trump’s loans was an attack, Cruz called it a “fact.” “That’s not an insult, it’s a fact,” he said.