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Amalija Knavs, the mother of former first lady Melania Trump, steps off Air Force One upon arrival at Andrews Air Force Base in Maryland, on June 11, 2017.
CNN  — 

Amalija Knavs, the mother of former first lady Melania Trump, has died, Trump posted on her social media accounts. She was 78.

“Amalija Knavs was a strong woman who always carried herself with grace, warmth, and dignity. She was entirely devoted to her husband, daughters, grandson, and son-in-law. We will miss her beyond measure and continue to honor and love her legacy,” she wrote on X.

A campaign adviser for former President Donald Trump confirmed Knavs’ death to CNN.

The former president mourned the death of Knavs in a post on Truth Social Tuesday evening.

“This is a very sad night for the entire Trump family!!! Melania’s great and beautiful mother, Amalija, has just gone to a beautiful place in the sky,” Trump wrote. “She was an incredible woman, and will be missed far beyond words!”

Knavs was from Slovenia, previously communist Yugoslavia, and was a textile worker. She and her husband, Viktor, had resided in the United States and were frequently spotted in Washington after their son-in-law became president in 2017.

The retired couple maintained regular contact with the Trump family during the administration, often traveling with the first family on trips to Mar-a-Lago and Bedminster, New Jersey.

Alex Wong/Getty Images
Amalija Knavs and Viktor Knavs arrive to listen to President Donald Trump's acceptance speech for the Republican presidential nomination on the South Lawn of the White House August 27, 2020 in Washington, DC.

As of 2016, the Knavses had owned a house in Sevnica, a quiet industrial town of 5,000 nestled in a lush tree-lined valley on the banks of the Sava river in central Slovenia, where Melania Trump attended primary school. But since their grandson Barron Trump was born in 2006, they spent most of their time in New York, neighbors said at the time.

The Knavses became US citizens in 2018, controversially obtaining their citizenship through the sponsorship of their adult daughter – a visa category the Trump administration had sought to end. Donald Trump had harshly criticized family-based migration, regularly referring to it as “chain migration.”

Melania Trump, who herself became a US citizen in 2006, is only the second foreign-born first lady. She has largely avoided the public eye since leaving Washington in January 2021, even as her husband pursues another White House bid.

This story has been updated with additional details.

CNN’s Jack Forrest, Betsy KleinTal KopanMJ Lee Nick ThompsonPhil Black, Matjaz Krivic, Gašper Andrinek and Kristen Holmes contributed to this report.