Former White House aide Omarosa Manigault NewmanOmarosa Onee Manigault NewmanSales of political books up 25 percent in 2018: report Woodward book breaks 93-year publishing record Stormy Daniels announces new tell-all book: 'Full Disclosure' MORE on Thursday said she believes the anonymous op-ed in The New York Times disparaging President TrumpDonald John TrumpTrump rallies in Nevada amid Supreme Court flurry: 'We're gonna get Brett' Trump: 'Good news' that Obama is campaigning again Trump boosts Heller, hammers 'Wacky Jacky' opponent in Nevada MORE likely came from within Vice President Pence’s office.

Manigault Newman said Thursday on the “Bernie and Sid in the Morning” radio show that she doesn’t think Pence authored the op-ed, but that someone on his staff did.

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“I would say I could narrow it down to Pence’s office,” she said.

She added that the writer “is very specific about being a staffer.”

“Having served as an assistant to the president as well, I believe it’s a staffer,” she said. “I don’t believe it is someone who is at the president or vice president’s level. But because of the choice of words, it is very similar to the speaking style and patterns of someone who would work around the vice president. That’s my opinion.”

A spokesman for Pence on Thursday denied that the vice president was behind the op-ed, which described efforts among staffers in the Trump administration to push back against the president's instincts.

“The Vice President puts his name on his Op-Eds. The @nytimes should be ashamed and so should the person who wrote the false, illogical, and gutless op-ed. Our office is above such amateur acts,” Jarrod Agen, Pence's deputy chief of staff and communications director, wrote on Twitter.

A spokeswoman for Pence told The Hill on Thursday that Agen’s tweet was a denial on behalf of the entire office.