Maryanne Trump Barry, a federal appellate judge and former President Donald Trump sister, passed away at 86, as reported by CNBC.

Medical workers were called to her Fifth Avenue apartment in Manhattan after 4 a.m. ET on Monday, where she was pronounced dead.

According to the New York Police Department, there were no signs of trauma or foul play.

Appointed to the US Court of Appeals for the Third Circuit in 1999 by then-President Bill Clinton, Maryanne Trump Barry, Donald Trump's sister, led a relatively low-profile career compared to her brother's prominence in television, business, and as the President of the United States.

She served two decades on the Philadelphia-based appeals court before retiring amid a civil misconduct investigation of her family's alleged tax-dodging schemes.

Her retirement in 2019 concluded the probe, which focused on whether Barry violated judicial conduct rules by participating in the schemes detailed in a New York Times investigation.

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Donald Trump and Maryanne Trump Barry

Donald Trump praised his sister as a "highly respected judge," even though they disagreed on public policy, per Fox News.

Four years later, Trump dismissed secret audio recordings released by his niece, Mary Trump, where Barry criticized him for having "no principles" and being "cruel."

 "Every day, it's something else; who cares?" Trump said at the time, brushing off the recordings that emerged shortly after the White House hosted a private memorial service for Robert Trump, Donald Trump's younger brother, who passed away on August 15, 2020, at the age of 71.

Mary Trump, the niece who made the recordings, published a tell-all book about the then President and their family.

In the secretly recorded conversation in 2018, "Donald is cruel. All he wants to do is appeal to his base. He has no principles. None. None," Barry said.

Donald Trump's sister, Maryanne Trump Barry, referred to the former President's administration's zero-tolerance policy at the US-Mexico border, which led to the separation of children from their parents during immigration court hearings. The policy was later rescinded.

Donald Trump Sister, Maryanne Trump Barry, Early Life and Career

Maryanne Trump Barry, the eldest of five Trump siblings, was born in New York in 1937.

Fred Trump Jr., the eldest son, passed away in 1981, and the youngest, Robert Trump, passed away in 2020.

After graduating from Mount Holyoke College, Barry earned a master's degree in 1962 from Columbia University and a law degree from Hofstra University in 1974, according to CBS News.

She served as an Assistant US Attorney for New Jersey from 1974 to 1983, holding positions such as Executive Assistant US Attorney and First Assistant US Attorney.

President Ronald Reagan nominated Barry as a US District Court judge in 1983, New Jersey Globe noted.

Her nomination stirred controversy among New Jersey Republicans, with Roger Stone, a close ally of Donald Trump, advocating for her appointment.

Stone's efforts led to her recommendation for the post by Gov. Thomas H. Kean, resulting in the withdrawal of the other finalist, Joseph Rodriguez.

In 1989, before Rep. Jim Courter entered the race, Stone suggested Barry consider seeking the Republican nomination for Governor of New Jersey.

Following the resignation of H. Lee Sarokin, President Bill Clinton nominated Barry to the federal appellate court in 1999.

She became an appellate court judge one year later and wrote a majority opinion striking down a New Jersey law banning late-term abortions.

Surviving Maryanne Trump Barry, in addition to her brother, is a son from her first marriage, David Desmond. Her husband, John Barry, a prominent New Jersey attorney, passed away in 2000.

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Written by: Bert Hoover

WATCH: Maryanne Trump Barry, sister of Donald Trump, dies at 86 - From MSNBC