Buzzfeed's Trump lawyer report not accurate - Mueller's office
US special counsel Robert Mueller has disputed a claim that President Trump told his long-time lawyer Michael Cohen to lie to Congress.
Mr Mueller's office said the report by Buzzfeed was "not accurate".
The website said that Cohen had told investigators that Donald Trump had instructed him to lie about plans to build a Trump Tower in Moscow.
Mr Trump later denied the report saying his ex-lawyer had lied to investigators to "reduce his jail time".
On Saturday the president thanked Mr Mueller's office, saying the statement was "very appropriate".
Responding to the special counsel's statement, Buzzfeed editor-in-chief Ben Smith tweeted that he stood by the story.
In response to the statement tonight from the Special Counsel's spokesman: We stand by our reporting and the sources who informed it, and we urge the Special Counsel to make clear what he's disputing.
End of Twitter post by @BuzzFeedBen
Democratic politicians have said they will investigate the allegations.
In a brief statement, it said: "Buzzfeed's description of specific statements to the Special Counsel's Office, and characterisation of documents and testimony obtained by this office, regarding Michael Cohen's Congressional testimony are not accurate."