New York (CNN Business) Stanley Chera, the prominent New York City real estate developer and Republican donor who co-founded Crown Acquisitions, has died of complications related to Covid-19, a source close to Chera confirmed to CNN Sunday. He was in his late 70s.

The news was first reported by journalist Yashar Ali.

Chera's real estate career began when he started buying the retail buildings that held his family's chain of children's specialty stores, holdings that became Crown Acquisitions, according to the company's website . The company eventually divested from the retail stores to focus on real estate. Crown's holdings include several iconic New York City properties, such as The St. Regis New York and the Cartier Mansion.

Chera was also friends with President Donald Trump.

"My deepest sympathies go out to Frieda Chera and the family of the late, great, Stanley Chera, one of Manhattan's most brilliant real estate minds," Trump tweeted Monday. "Stanley was charitable, kind, and a wonderful friend. He will be truly missed!"

From 2016 to 2019, Chera donated a total of $402,800 to Donald J. Trump for President Inc. and Trump Victory, organizations dedicated to supporting Trump's presidency, according to Federal Election Commission records

Chera's Crown Acquisitions inked a deal in 2008 with now-Trump son-in-law and White House senior adviser Jared Kushner's firm The Kushner Companies and private equity firm The Carlyle Group. Crown Acquisitions and Carlyle Group took a stake in the retail portion of the building at 666 Fifth Avenue in New York City, which was owned by Kushner Companies. The Fifth Avenue skyscraper ended up being a troubled property that weighed down The Kushner Companies' portfolio for years until the building was sold to Brookfield Properties in 2018.

Chera introduced Trump at the New York City Veteran's Day Parade last November, calling the president "my dear friend."

Trump called out Chera at a 2019 rally in Grand Rapids, Michigan, describing him as "one of the biggest builders and real estate people in the world."

"And he's a great guy and he's been with me from the beginning," Trump said of Chera.

Ivanka Trump, Jared Kushner, Stanley Chera and Rob Stuckey attend The New York Observer Hosts Masters of Real Estate at The Metropolitan Club on September 21, 2011 in New York City.

The New York Post reported Chera's hospitalization with coronavirus on March 24.

Trump last month described a friend who was battling the "viciousness" of coronavirus and falling into a coma.

It is now believed Chera was the specific individual Trump was describing. The facts of Chera's illness match what Trump described.

"We thought they were going in for a mild stay, and in one case, he's unconscious, in a coma," Trump also said. "And you say, how did that happen?"

Three people familiar with the matter told the New York Times that Trump was describing Chera in his comments about the specific individual. The Times reported two of the sources said Chera was in a medically inducted coma at the time.

Trump later said he had "some friends that are unbelievably sick" from it. It is not known what other friends Trump may have been referencing.

The White House has not responded to requests for comment regarding Trump's description of the friend.

Chera's family has not publicly discussed the friendship with the President or Chera's death.

While Chera was known in New York as a real estate and business titan, he also was a philanthropist who funded causes like soup kitchens, the source who confirmed Chera's death told CNN. His ultimate philanthropic passion was aid for special needs children, the source said.

Chera was a co-founder of the nonprofit Sephardic Community Center in Brooklyn.

He "was a very special man, loved by all," the community center said in a statement. "His devotion to so many of our community institutions is unmatched."

--CNN's Amir Vera and Claire Colbert contributed to this report.