Donald Trump has fired his campaign manager after widespread reports of a power struggle in the billionaire White House hopeful's inner circle.

The power vacuum left by the departure of Corey Lewandowski, an outsider whose relative lack of experience had become a symbol of Trump's non-traditional campaign, will likely be filled by Republican strategist and party insider Paul Manafort.

The two men were reportedly often at odds about the direction to take Trump's campaign, though the candidate himself has dismissed their rivalry as mere gossip.

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Meanwhile, reports emerged soon after the campaign's official announcement that it was actually Ivanka Trump — and her publisher husband Jared Kushner — who wanted Lewandowski out.

I'm told the person who convinced Trump to fire Corey is Ivanka - who met with her dad and said get rid of him or she can no longer help — Dana Bash (@DanaBashCNN) June 20, 2016

"The Donald J. Trump Campaign for President, which has set a historic record in the Republican primary having received almost 14 million votes, has today announced that Corey Lewandowski will no longer be working with the campaign," campaign spokeswoman Hope Hicks said in a statement.

According to CNN's Dana Bash, the move came after Ivanka Trump gave her father an ultimatum.

"I'm told the person who convinced Trump to fire Corey is Ivanka — who met with her dad and said get rid of him or she can no longer help," Bash tweeted Monday.

Also behind the move was Ms. Trump's husband, Bash said.

I'm told that also intimately involved in getting Corey out was Trumps son in law Jared, who has a large and growing behind the scenes role — Dana Bash (@DanaBashCNN) June 20, 2016

"I'm told that also intimately involved in getting Corey out was Trumps son in law Jared, who has a large and growing behind the scenes role," Bash wrote.

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Lewandowski is a former New Hampshire field director for a conservative advocacy group. He became something of a household name after he was accused of manhandling a reporter at a Florida primary event.

The charge against him by a local sheriff was eventually dropped.

In a statement, Corey said Monday: "I stand by the fact that Mr. Trump is a great candidate and is better than Hillary Clinton ever will be."

See more of Lewandowski​ on the campaign trail:



8 PHOTOS Corey Lewandowski, Donald Trump's former campaign manager See Gallery Corey Lewandowski, Donald Trump's former campaign manager PALM BEACH, FL - MARCH 11: Corey Lewandowski campaign manager for Republican presidential candidate Donald Trump speaks with the media before former presidential candidate Ben Carson gives his endorsement to Mr. Trump at the Mar-A-Lago Club on March 11, 2016 in Palm Beach, Florida. Presidential candidates continue to campaign before Florida's March 15th primary day. (Photo by Joe Raedle/Getty Images) Donald Trump, president and chief executive of Trump Organization Inc. and 2016 Republican presidential candidate, center, pauses while speaking during a news conference with his son Eric Trump, right, and Corey Lewandowski, campaign manager for Trump, left, at the Mar-A-Lago Club in Palm Beach, Florida, U.S., on Tuesday, March 15, 2016. Billionaire Trump fell short of his goal of winning the two key states he needed to clear most of the Republican presidential field, securing a huge victory in Florida to knock out Senator Marco Rubio while losing Ohio to Governor John Kasich. Photographer: Andrew Harrer/Bloomberg via Getty Images Corey Lewandowski, campaign manager for 2016 Republican presidential candidate Donald Trump, speaks to members of the media before a news conference at the Mar-A-Lago Club in Palm Beach, Florida, U.S., on Friday, March 11, 2016. Ben Carson, who recently ended his quest for Republican presidential nomination, endorsed his onetime rival Donald Trump Friday striking a blow to presidential candidate Senator Ted Cruz, who had courted Carson because they appeal to many of the same religious-minded voters. Photographer: Andrew Harrer/Bloomberg via Getty Images Corey Lewandowski, campaign manager for Donald Trump's 2016 Republican presidential campaign, speaks on the telephone while at his desk inside the Trump campaign headquarters located in Trump Tower in New York, U.S., on Wednesday, Aug. 26, 2015. The billionaire front-runner for the Republican nomination continues his momentum this fall by preparing media ads and holding public appearance throughout the country. Photographer: Ali Elkin/Bloomberg via Getty Images Republican Presidential candidate Donald Trump's campaign manager Corey Lewandowski (C) is seen allegedly grabbing the arm of reporter Michelle Fields in this still frame from video taken March 8, 2016 and released by the Jupiter (Florida) Police Department March 29, 2016. Lewandowski, 42, was arrested in Florida on Tuesday and charged with battery, police records show. REUTERS/Jupiter Police Department/Handout via Reuters THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS Republican Presidential candidate Donald Trump's campaign manager Corey Lewandowski (C) is seen allegedly grabbing the arm of reporter Michelle Fields in this still frame from video taken March 8, 2016 and released by the Jupiter (Florida) Police Department March 29, 2016. Lewandowski, 42, was arrested in Florida on Tuesday and charged with battery, police records show. REUTERS/Jupiter Police Department/Handout via Reuters FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS Corey Lewandowski (R) campaign manager for Republican U.S. presidential candidate Donald Trump (C) reaches between Trump and a U.S. Secret Service agent (2nd R) towards Breitbart News reporter Michelle Fields (L) after a news conference held at Trump's National Golf Club in Jupiter, Florida, March 8, 2016. Lewandowski, 42, was arrested in Florida on Tuesday and charged with battery for his interaction with Fields at the event, police records show. Picture taken March 8, 2016. REUTERS/Joe Skipper/Files TPX IMAGES OF THE DAY JUPITER, FLORIDA - MARCH 29: A police car sits outside the police department on March 29, 2016 in Jupiter, Florida. Donald Trump's campaign manager Corey Lewandowski has been charged with simple battery after allegedly grabbing a reporter by the arm at a campaign event. (Photo by Mychal Watts/Getty Images) Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

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