Former President Donald Trump’s first wife, Ivana Trump, passed away at age 73 Thursday, BBC reported.

Ivana Trump is the mother of three out of the four of Donald Trump’s children: Ivanka, Donald Jr., and Eric Trump. The former president took to Truth Social to deliver his remarks on his ex-wife’s passing:

“I am very saddened to inform all of those that loved her, of which there are many, that Ivana Trump has passed away at her home in New York City. She was a wonderful, beautiful, and amazing woman, who led a great and inspirational life. Her pride and joy were her three children, Donald Jr., Ivanka, and Eric. She was so proud of them, as we were all so proud of her. Rest In Peace, Ivana!”

Ivana Trump was born in the Czech Republic (then Czechoslovakia) in the town Gottwaldov in 1949, back when the country was under the grip of the Soviet communist bloc in Eastern Europe. She married the former president in 1977, divorcing 15 years later in 1992. The cause of Ms. Trump’s death is reportedly being investigated by police, with authorities currently believing the death was “accidental.”

When married, Ivana Trump quickly rose to become a powerful force within Donald Trump’s real estate empire, managing the interior design of many high-profile properties, according to Fox News.

“It wasn’t easy to raise three kids as a full-time working mother, even with nannies,” Ivana wrote in her 2017 memoir, Raising Trump: Family Values from America’s First Mother. 

“During my fourteen-year marriage to Donald, I designed the interiors of the Grand Hyatt Hotel and Trump Tower, was president and CEO of Trump Castle (the only woman in the top position at any casino in the world that I know of), and president and CEO of the Plaza Hotel, winning the prestigious Hotelier of the Year award in 1990.”

Ivana Trump was known to be a woman who worked non-stop, either as a mother or as a significant part of the Trump family business.