London (CNN) US President Donald Trump told reporters on Tuesday that he doesn't know Britain's Prince Andrew, despite being photographed with him on several occasions.

"I don't know Prince Andrew, but it's a tough story," Trump said in London during a press appearance on the sidelines of the NATO summit. "I don't know him, no."

However, a number of photos show the President alongside the Duke of York during his state visit to the UK in June this year.

Prince Andrew, Duke of York smiles and shakes hands with US President Donald Trump during the visit to Westminster Abbey on June 03, 2019 in London, England.

Trump was also photographed with Prince Andrew at his Mar-a-Lago resort in 2000 alongside first lady Melania Trump, who was Trump's girlfriend at the time.

US President Donald Trump, First Lady Melania Trump and Britain's Prince Andrew at the Mar-a-Lago estate, Palm Beach, Florida on February 12 in 2000.

In June, the Duke of York tweeted from his official account about a breakfast meeting he attended with Trump during the state visit, along with several photos.

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