Republican presidential nominee Donald Trump says he will probably create a super PAC with the aim of hobbling the political future of U.S. Sen. Ted Cruz, R-Texas.

Trump, a mercurial businessman whose promises have often been subject to deep skepticism, confirmed the plan in an interview set to air Sunday on NBC. He was asked about a report Friday that said he wants to set up a super PAC, which can raise and spend unlimited amounts of money, to go after Cruz and Ohio Gov. John Kasich, two former Republican primary opponents who have not endorsed him.

In in the interview, Trump started off by saying the super PAC plan is "not the number one thing on my mind" and that he is currently focused on winning the White House. "With that being said, yeah, I'll probably do a super PAC, you know, when they run against Kasich, for $10 million to $20 million, against Ted Cruz," Trump said.

Trump added that the super PAC would target a third person, but he declined to say who.

He first floated the idea of an anti-Cruz super PAC in remarks to supporters Friday in Cleveland. "Maybe I'll set up a super PAC if he decides to run" in 2020, Trump said.

Trump's comments represent his latest bid for vengeance against Cruz, who is up for re-election to the Senate in 2018 and is considered a potential presidential candidate in 2020. Cruz drew the wrath of Trump and his supporters with an address Wednesday at the Republican National Convention that declined to offer any support for the nominee.

Trump's interview is scheduled to air Sunday morning on "Meet the Press with Chuck Todd." A Cruz representative did not immediately respond to a request for comment.