President Trump denied Monday pledging to donate $1 million to a charity selected by Sen. Elizabeth Warren, D-Mass., if she took a DNA test that proved her Native American ancestry, and questioned why anyone would care that Warren released the results of the test.

“Who cares?” Trump told reporters when asked for his reaction to Warren releasing the test. “Who cares?”

Asked by reporters if he would now pay out the $1 million he previously pledged to pay to charity if Warren produced a DNA analysis, Trump said hadn't made such a promise.

"I didn't say that," Trump said. "You better read it again."

[Cornell professor: Media headlines 'overstate' Elizabeth Warren's DNA test results]

During a rally in Great Falls, Mont., in July, the president said that if Warren is the 2020 Democratic presidential nominee, he would challenge her to take a DNA test to prove she has Native American ancestry.

“We will say, ‘I will give $1 million to your favorite charity paid for by Trump if you take the test and it shows you’re an Indian,” Trump said during the rally. “Let’s see what she does, right? I have a feeling she will say no. But we will hold that for the debates.”

Warren took the DNA test and provided the results to the Boston Globe on Sunday. The analysis, from Stanford University professor Carlos Bustamante, shows there is “strong evidence” the Massachusetts senator has a Native American ancestor “in the range of 6-10 generations ago.”

The Massachusetts senator told Trump in a tweet that she wants his $1 million check sent to the National Indigenous Women’s Resource Center.

The senator’s decision to release the results has stoked speculation she will run for president in 2020.

Trump, though, said he didn’t believe Warren would be a threat to him if they two were to face off in the next presidential election.

“I hope that he is running,” he said. “I do not think she’d be difficult at all. She'll destroy the country. She'll make our country into Venezuela,” Trump said. “What that being said, I don't want to say bad things about her because I hope she will be one of the people that would get through the process. It’s going to be a long process for the Democrats.”