US President Donald Trump has blamed the FBI for failing to stop leaks to the media.

He said the information being reported is classified and could have a "devastating effect" on the country.

Mr Trump made the remarks in a tweet early on Friday.

His tweet followed reports that White House chief of staff Reince Priebus had asked a top FBI official to dispute media reports that Mr Trump's campaign advisers were frequently in touch with Russian intelligence agents during the election.

Mr Trump tweeted: "The FBI is totally unable to stop the national security 'leakers' that have permeated our government for a long time. They can't even find the leakers within the FBI itself."

He added: "Classified information is being given to media that could have a devastating effect on U.S. FIND NOW."