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US Senator Elizabeth Warren has revealed that a DNA test shows "strong evidence" that she has distant Native American ancestry.
She took the test after President Donald Trump taunted her in speeches, calling her a "fake Pocahontas" and challenging her to take the test.
The DNA test suggests Ms Warren has a Native American ancestor dating back six to 10 generations.
Many believe the Democrat is preparing for a presidential bid in 2020.
What exactly was revealed?
Ms Warren, who is up for re-election in Massachusetts, shared the report along with a video of family and colleagues discussing her heritage on Monday.
The DNA report was conducted by geneticist Carlos Bustamante of Stanford.
"The vast majority" of Ms Warren's ancestry is European, it concludes, but "the results strongly support" a Native American ancestor.
This puts Ms Warren as between 1/32 and 1/512 Native-American, according to the Boston Globe.
Ms Warren herself is not a part of any native tribe. While the results of the test do confirm there is native heritage in Ms Warren's family tree, critics could still point out how imprecise these DNA tests can be.
The senator's accompanying video begins with a clip of the president mocking her at a rally, saying: "She said she's Native-American and I said, Pocahontas!"
Pocahontas was the daughter of a 17th Century indigenous chief.
The video shows Ms Warren's family - including brothers who say they are Republicans - criticizing the president's taunts.
A cousin who is identified as being a member of the Cherokee Nation adds: "It's offensive to me, not just as Betsy's cousin, but as a Native-American."