Updated: 15/06/17 : 13:18:19Printable Version
President Donald Trump is being investigated by special counsel Robert Mueller for possible obstruction of justice, US media reports say.They say senior intelligence officials will be interviewed on whether Mr Trump tried to end an inquiry into his sacked national security adviser, and about the firing of FBI chief James Comey.
Mr Trump tweeted that the move was the latest action in a "phony story".
Mr Mueller is leading an FBI inquiry into Russian meddling in the election.
President Trump has repeatedly denied any collusion with Russia, describing the ongoing inquiry as a "witch hunt".
The latest development was first carried in the Washington Post
. Later the New York Times
and Wall St Journal
reported the story, citing their own sources.
The Washington Post said the decision by Mr Mueller to investigate President Trump's own conduct is a major turning point in the investigation, which until recently focused on the Russian angle.
The latest media reports say the obstruction of justice investigation began just days after President Trump fired Mr Comey on 9 May.
Mr Comey, who had been leading one of several Russia inquiries, testified to Congress last week that Mr Trump had pressurised him to drop the investigation into former National Security Adviser Michael Flynn.