US President Donald Trump has slammed former president Barack Obama's handling of alleged Russian interference in the 2016 US presidential campaign, accusing his predecessor of collusion, and demanding an apology from investigators.
Mr Trump has increasingly lashed out over the ongoing investigations into Russia's role in the election and possible collusion by his campaign.
The Republican president said Obama "colluded or obstructed," but gave no other details about his accusation.
"The reason that President Obama did NOTHING about Russia after being notified by the CIA of meddling is that he expected Clinton would win... and did not want to 'rock the boat.' He didn't 'choke,' he colluded or obstructed, and it did the Dems and Crooked Hillary no good".
The White House referred any questions about the Russia investigations to Mr Trump's personal lawyer, Marc Kasowitz.
In a Fox News interview broadcast on Monday (local time), Mr Trump said he had learned that Mr Obama had known about the Russia issue long before the election but that he "did nothing about it".
Department of Justice Special Counsel Robert Mueller along with several congressional committees are probing alleged Russian meddling in the election last November and any possible ties to Mr Trump's campaign or associates.
The Obama administration formally accused Russia in October of a campaign of cyber attacks against Democratic Party organisations ahead of the November 8 election.
In December, Mr Obama ordered intelligence agencies to review cyber attacks and foreign intervention in the election and to deliver a report before he left office on January 20.
The intelligence agencies said in January they had concluded that Moscow tried to tilt the election in Mr Trump's favour, including by hacking into senior Democrats' emails and leaking them.