Former Massachusetts Sen. Scott Brown said Monday that his successor Sen. Elizabeth Warren should take a DNA test to prove her Native American heritage.

Brown, who spoke on a conference call after Warren appeared with former Secretary of State Hillary Clinton in Cincinnati, told reporters that the Massachusetts Democrat could easily clear up the chatter about her heritage by releasing records from Harvard University and the University of Pennsylvania, where she taught.

"First of all — as we all know, she's not Native American. She's not 1/32nd. She has no Native American background except for what her family told her," Brown said on the call, which was held by the Republican National Committee. "The easy answer, as you all know, is that Harvard and Penn can release the records. She can authorize the release of those records. She can take a DNA test, she can release the records herself."

"There's never been any effort, and that's the problem with not only Secretary Clinton but Elizabeth Warren is that there's two sets of rules," Brown said. "There's one for them and one for everybody else."

Brown, who unsuccessfully ran for Senate in New Hampshire two years ago, also said that he couldn't speak for Donald Trump, who he supports, about his frequent use of the nickname "Pocahontas" while referring to Warren.

"You'd have to talk to Donald Trump about his philosophy in attacking surrogates," Brown said.

"They're virtually one in the same. The talking points that Warren's been using for over a month now come from the DNC and from the Clinton camp," Brown continued. "So indirectly, Secretary Clinton is considering making someone the vice president who has very serious character flaws when it comes to honesty and credibility in dealing with her heritage. And what did that do? That took away somebody who truly was a Native American and gave that opportunity to somebody who's not, and that's just not right. It's a reverse form a racism, quite frankly."

Brown attacked Warren for her use of her heritage during their 2012 race for the Senate. Warren won by 7 percentage points.