Story highlights Trump threatened to "spill the beans" about Ted Cruz's wife in a tweet Tuesday night

The real estate mogul appears to be referencing an ad from a Super PAC with no known connection to the Cruz campaign

Washington (CNN) Donald Trump escalated his feud with Ted Cruz on Twitter Tuesday — but this time he also involved the Texas senator's wife, who hit back on Wednesday at an impromptu press conference.

The real estate mogul tweeted that the Texas senator should "be careful" or he would "spill the beans on your wife" Heidi Cruz.

"Lyin' Ted Cruz just used a picture of Melania from a G.Q. shoot in his ad. Be careful, Lyin' Ted, or I will spill the beans on your wife!," he tweeted Tuesday evening, just minutes before polls closed in Arizona. Trump tweeted and deleted a similar version of the Tweet about 10 minutes earlier.

Lyin' Ted Cruz just used a picture of Melania from a G.Q. shoot in his ad. Be careful, Lyin' Ted, or I will spill the beans on your wife! — Donald J. Trump (@realDonaldTrump) March 23, 2016

Trump appears to be referring to a Facebook advertisement targeted to Mormons that shows Trump's wife, Melania, posing nude. That ad was produced by an anti-Trump super PAC, Make America Awesome, which has no known connection to the Cruz campaign.

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