US President Donald Trump has said he would be willing to be interviewed under oath by Special Counsel Robert Mueller, who is investigating Russian meddling in the 2016 US election.
"I'm looking forward to it, actually," Mr Trump, speaking to reporters at the White House, said of an interview with Mr Mueller.
"I would do it under oath."
.@realDonaldTrump says he would "love" to be questioned under oath by Russia collusion prosecutor Robert Mueller pic.twitter.com/wqvD6BI7dw
— RTÉ News (@rtenews) January 25, 2018
Although Mr Trump has pledged cooperation with Mr Mueller's probe before, he made his assertion as the White House and allies in Congress have stepped up attacks on the investigation's credibility and Mr Trump himself has hedged on whether he would answer questions.
More recently, Mr Trump's attorneys have been talking to Mr Mueller's team about an interview, according to sources with knowledge of the investigation.
"I would like to do it as soon as possible," Mr Trump said.
Mr Trump, however, said that setting a date certain for an interview would be "subject to my lawyers and all of that."
Asked whether he thought Mr Mueller would treat him fairly, Mr Trump replied, "We're going to find out."
Mr Trump's comments follow reports in the US media which said Mr Mueller wants to interview the president in the next few weeks.
The White House has said it will co-operate fully with Mr Mueller's investigation.
The reports in The Washington Post came on the day it emerged that Mr Mueller had already interviewed the first member of Mr Trump's cabinet - Attorney General Jeff Sessions.
Mr Trump has said he was not at all concerned about Mr Sessions' interview.
Mr Mueller is believed to want to question Mr Trump about his decision to fire the former FBI Director James Comey - an episode central to the question of whether Mr Trump may have committed obstruction of justice.
Mr Mueller's investigation so far has led to two Trump associates, former national security adviser Michael Flynn and campaign aide George Papadopoulos, pleading guilty to lying to FBI agents.
Two others, former Trump campaign manager Paul Manafort and his associate, Richard Gates, were indicted on money laundering charges but have pleaded not guilty.
NBC News has reported that CIA Director Mike Pompeo has been questioned by the special counsel's office.
NBC, citing people familiar with the inquiry, did not say when the interview with Mr Pompeo occurred but said one person familiar with the inquiry called him a "peripheral witnesses" to Mr Comey's firing.
Representatives for the CIA said the US intelligence agency had no comment on NBC's report.
NBC also reported that former senior campaign aide and White House strategist Steve Bannon is expected to meet Mr Mueller's team by the end of the month.
Mr Bannon had earlier reached an agreement to be interviewed by Mueller's investigators instead of appearing before a grand jury.
US intelligence agencies have concluded that Russia interfered in the 2016 campaign using hacking and propaganda to try to tilt the race in Mr Trump's favour.
Russia has denied it.
Mr Trump has denied any collusion with Russia, and has called the Mueller investigation a "witch hunt".
