(CNN) President Donald Trump revived Tuesday his "Pocahontas" nickname for Elizabeth Warren, a day after the Massachusetts senator released a DNA test amplifying the controversy over her claimed Native American heritage.

"Pocahontas (the bad version), sometimes referred to as Elizabeth Warren, is getting slammed," Trump tweeted of his potential 2020 challenger.

"She took a bogus DNA test and it showed that she may be 1/1024, far less than the average American. Now Cherokee Nation denies her, "DNA test is useless." Even they don't want her. Phony!" Trump said.

Pocahontas was a historical figure from the 17th Century and using her name in an intentionally disparaging way insults native peoples and degrades their cultures. The largest Native American advocacy group has said that is why it has condemned the President's usage in this manner.

In a second tweet moments later, Trump alleged that Warren's claims of Native American heritage "have turned out to be a scam and a lie" and called for Warren to apologize for the second time in 24 hours.

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