Republican presidential front-runner Donald TrumpDonald TrumpOvernight Finance: Senate, House strike deal on Flint | Shutdown averted | Yellen defends Fed from Trump Warren: Clinton is 'acutely aware' of Trump's voter appeal on trade Trump mocks Clinton for stumbling while sick with pneumonia MORE on Sunday slammed rival Ted CruzTed CruzOvernight Tech: TV box plan faces crucial vote | Trump transition team to meet tech groups | Growing scrutiny of Yahoo security Could Snapchat be the digital bridge to younger voters? Senate passes funding bill to avoid shutdown MORE for the recent ad produced by an anti-Trump super-PAC featuring a photo of Trump's wife posing nude.
"But it was a cover story for 'GQ,' a big magazine. And it was, you know, fine. And from what I hear, somebody bought the rights to it and he was the one or his campaign bought the rights and they gave it to the super-PAC."
Trump said Cruz knew about the ad, adding he started the latest fight between the two. Last week, Trump threatened to "spill the beans" on Cruz's wife in response to the ad featuring Melania Trump. He then shared a tweet featuring a photo of his wife next to a photo of Cruz's wife, stating, "A picture is worth a thousands words."
Cruz has denied knowing anything about the ad, and called it deplorable on Sunday.
But Trump said the super-PAC that produced the ad is "very friendly to Ted Cruz."
"He knew all about it, 100 percent," he said. "There's no way in a million years that super-PAC did that without his absolute knowledge."
Cruz campaign spokeswoman Catherine Frazier said the campaign did not buy the photo rights. "Of course we haven't and Trump knows it," she said in an email to The Hill. "But [it's] part and parcel for the sleazy, dishonest campaign he is running."
—Updated 9:43 p.m.