Presumptive Republican nominee Donald Trump says he would debate Sen. Elizabeth Warren, who he calls “Pocahontas.”

“I’d debate her,” Trump said when asked during a press conference in North Dakota on Thursday about the Democratic senator. Warren has been critical of Trump on Twitter.

After he called Warren “Pocahontas,” a local reporter shouted that she finds that offensive.

Trump calls Warren "Pocahontas". Local ND reporter yells "that's very offensive". Trump says "ok". Then calls warren "Pocahontas" again. — Katy Tur (@KatyTurNBC) May 26, 2016

https://vine.co/v/i9p3nrtMmql

Worth noting the reporter who was so offended by "Pocahontas" had previously asked Trump about tribal sovereignty — Ben Jacobs (@Bencjacobs) May 26, 2016

Nicole Robertson, the reporter who called Trump's "Pocahontas" remarks offensive is a member of the Cree Nation — Ben Jacobs (@Bencjacobs) May 26, 2016

“She wasn’t able to document it,” Trump charged about Warren’s previous claim to be Native American.

“She was able to get into various schools,” Trump alleged, saying that was because she applied as Native American. “I think she’s as Native American as I am.”

Trump earlier also said he would debate Sen. Bernie Sanders (I-VT) if the money raised from the debate would go to a charity for women’s health.

***UPDATE***

Following Trump’s press conference and energy speech, he took to Twitter to again comment on Warren.