US President Donald Trump has denied hiding details of conversations with Russia’s Vladimir Putin, saying he is “not keeping anything under wraps”.

The Washington Post alleges that on at least one occasion in 2017 he took away his interpreter’s notes after talks.

And there is reportedly no record of his one-on-one, two-hour discussion with Putin in Helsinki last year.

Trump’s relations with Russia before his election in 2016 are the subject of an ongoing federal investigation.

Investigators led by former FBI chief Robert Mueller are trying to establish whether there was any collusion between Mr Trump’s campaign team and the Russian state to help get him elected.

Earlier this week the New York Times reported that the FBI had opened a counterintelligence inquiry into whether Mr Trump was secretly working for Russia after he sacked FBI director James Comey in 2017.

This alleged inquiry was eventually merged into the Mueller investigation.

In 2016, US intelligence agencies concluded that Russia had launched cyber-attacks and planted fake news stories on social media in a bid to boost Mr Trump and damage his rival for the presidency, Hillary Clinton.

“I’m not keeping anything under wraps,” Trump told Fox News while referring to the latest report. “I couldn’t care less.”

He said he had talked in Helsinki to the Russian leader “like every president does” and that they had had a “great” conversation about “very positive things” such as the economy, the BBC reports.

“Anybody could have listened to that meeting,” he said. “That meeting is open for grabs. The whole Russia thing is a hoax.”

The US president said he met one-on-one with many world leaders but the meetings with Putin were all that were focused on.

White House spokeswoman Sarah Sanders said the story was so outrageously inaccurate it didn’t even warrant a response.