Slovakia`s Prime Minister Robert Fico. (File Photo)

Slovakia`s Prime Minister Robert Fico has privately warned EU leaders that US President Donald Trump`s state of mind appeared "dangerous" during a recent meeting at Mar-a-Lago.

During informal talks with EU counterparts on the sidelines of an emergency summit in Brussels on January 22, Fico said he was concerned about the US president`s "psychological state," Politico reported, citing two diplomats.

Fico used the word "dangerous" to describe how Trump came across during their face-to-face meeting at the US president`s Mar-a-Lago estate in Florida on January 17.

Diplomats briefed on Fico`s comments said the Slovak leader was shocked by Trump`s behavior during their meeting.

"Fico seemed traumatized," one source said. "He described Trump as out of his mind and dangerous."

The remarks were private and separate from formal summit discussions. They were relayed to other diplomats by multiple EU officials, all speaking on condition of anonymity.

The Slovak prime minister, however, later denied the report as "the hateful, pro-Brussels liberal portal Politico."

"I must emphatically reject the lies of the Politico portal about how I assessed my meeting with US President D. Trump," he wrote on social media platform X. "I did not speak informally with any prime minister or president about my visit to the US."

Trump`s unpredictability has worried European leaders for months. His positions on the Russia-Ukraine war, trade disputes, and the US role in European defense have repeatedly sparked alarm.

Earlier this month, Trump threatened tariffs on several EU nations over Greenland after publicly threatening to take over the Arctic island.

French President Emmanuel Macron and German Chancellor Olaf Merz told fellow leaders that Europe must reduce reliance on the United States for security.

European Commission President Ursula von der Leyen said that standing firm against Trump in a measured way is essential.

An EU official involved in political discussions in Brussels said concerns about Trump`s health are "rapidly becoming a more widely discussed topic at all levels."

Trump, who will turn 80 in June, has repeatedly denied any cognitive or health issues. He told New York Magazine this week that he does not suffer from Alzheimer`s disease.

Many observers, however, are uncertain about how Trump will perform in the remaining three years of his term.

During the first year of his second term, the US president has insulted allies, leaked confidential conversations, and ridiculed nations.

For the first time in US history, an American president has refused to rule out the use of force against an ally in Greenland. He sparked global ridicule when he claimed this was because the Nobel committee declined to award him the peace prize. Trump said he no longer feels "an obligation to think purely of peace."