President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE took aim at Sen. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.) at a campaign rally Thursday, warning that he could "revive" the nickname "Pocahontas" "very easily" and "very quickly" if necessary.

"I did the Pocahontas thing. I hit her really hard and it looked like she was down and out but that was too long ago," he said of Warren, who is seeking the Democratic Party's nomination to run against Trump in 2020.

"But don't worry, we will revive it. It can be revived. It will be revived and it can be revived very easily and very quickly and we're going to have some fun in the state of New Hampshire," he said.

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Trump has frequently hit Warren at rallies over the subject of her heritage, often referring to her derisively by the nickname "Pocahontas" and reciting inaccurate numbers from her blood test results.

The president recently swiped at Warren at a rally in Cincinnati earlier this month, again calling her "Pocahontas" and going after her claims of Native American heritage.

Warren took a test last year that demonstrated she was between 1/64 and 1/1028 Native American, and has since apologized multiple times for the confusion caused when she identified herself as Native American.

Trump's attacks come as Warren has seen her stock rise in the crowded Democratic primary field. Warren was seen as one of the winners of the latest Democratic presidential debates, gaining more speaking time than fellow progressive front-runner Sen. Bernie Sanders Bernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE (I-Vt.).

The Hill has reached out to Warren's campaign for comment.