Acting Director of National Intelligence Joseph Maguire has finished testifying to the House Intelligence Committee, and is now due to face a closed-doors session with the Senate Intelligence Committee.
During this morning's testimony, he defended his decision to withhold the anonymous whistleblower's complaint about Trump, saying it pertained to US officials that are not under his command.
Maguire said the whistleblower "did the right thing" and "acted in good faith", despite questions by Trump about whether the anonymous official is "on our side".
Just before testifying, the complaint - which has triggered an impeachment inquiry into Trump - was publicly released weeks after it was first made.
It contains several explosive claims, including that the White House sought to hide the transcript of the Trump-Zelensky call in a top-secret computer protected by a covert code-word.
Read more about the very Washington DC scandal here: