Donald Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE on Friday night fired off a series of tweets slamming Sen. Elizabeth Warren Elizabeth WarrenBiden's fiscal program: What is the likely market impact? Warren, Schumer introduce plan for next president to cancel ,000 in student debt The Hill's 12:30 Report - Presented by Facebook - Don't expect a government check anytime soon MORE (D-Mass.) after the liberal firebrand ripped the presumptive GOP nominee earlier this week.

Trump knocked Warren as "goofy," and said he hoped Democratic presidential candidate Hillary Clinton Hillary Diane Rodham ClintonWhat Senate Republicans have said about election-year Supreme Court vacancies Bipartisan praise pours in after Ginsburg's death Trump carries on with rally, unaware of Ginsburg's death MORE picked Warren as her running mate, predicting he'd defeat the pair.

He then continued by going after Warren's old claim of Native-American ancestry. He dismissed similar criticism from Warren last month by sarcastically referring to her as "the Indian."

I hope corrupt Hillary Clinton chooses goofy Elizabeth Warren as her running mate. I will defeat them both. — Donald J. Trump (@realDonaldTrump) May 6, 2016

Let’s properly check goofy Elizabeth Warren’s records to see if she is Native American. I say she’s a fraud! — Donald J. Trump (@realDonaldTrump) May 6, 2016

Goofy Elizabeth Warren, Hillary Clinton’s flunky, has a career that is totally based on a lie. She is not Native American. — Donald J. Trump (@realDonaldTrump) May 6, 2016

Trump's latest barbs directed at Warren come after the Democratic senator said this week that she would "fight my heart out" to stop his "toxic stew of hatred and insecurity" from reaching the White House. Warren, who said Trump has "built his campaign on racism, sexism, and xenophobia" in a series of tweets on Tuesday night, has often been speculated as a potential VP pick for Clinton.