Jared Kushner calls the Mar-a-Lago raid 'an issue of paperwork' and promotes his memoir in...

Jared Kushner downplayed the federal investigation into former President Donald Trump as "an issue of paperwork," while also deflecting blame onto the media and plugging his memoir in a new interview with UK-based news channel Sky News.

Kushner, Trump's son-in-law and former senior White House adviser, spoke to Sky about the Department of Justice's investigation into Trump taking classified and sensitive documents from the White House to his home in Palm Beach, Florida.

"You have to ask him that question," Kushner told host Kay Burley when asked why Trump took the top-secret documents home. "What I will say is that if you look at my book, you'll see that he was under constant attack."

"But he took top-secret documents home, potentially risking the security of the United States," Burley countered.

"I think that it's something that seems like it's an issue of paperwork that should have been able to be worked out between DOJ and him," Kushner said. "I don't know what he did or what he didn't take, but right now we're relying on leaks to the media."

Kushner's new book, "Breaking History: A White House Memoir ," came out on August 23.