White House attorneys are said to be researching impeachment procedures, CNN reported Friday, amid an avalanche of unflattering news hitting President Donald Trump's White House.

Officials at the White House have called a Trump impeachment a "distant" and "unlikely" possibility, according to CNN justice correspondent Evan Pérez, who cited two people briefed on the discussions.

The impeachment research was being conducted as a precautionary measure and was described as an informal process.

Some Democrats on Capitol Hill have been vocal about a potential Trump impeachment in recent days and weeks as pressure mounted in investigations surrounding Russia's US-election meddling and potential collusion with Trump associates. The broader inquiry evolved dramatically in the past 10 days after Trump fired FBI Director James Comey.

16 PHOTOS Reaction to report that Trump gave classified info to Russian officials See Gallery Reaction to report that Trump gave classified info to Russian officials Protip: Don’t give the Russians classified information. #Classified101 Protecting our national security is one of the most important tasks a president has, and Trump is failing at it. https://t.co/3hr9htzmZ2 Next time somebody says revealing unconstitutional mass surveillance to the press crossed a line, show them this: https://t.co/Ofr0WRVuso Shocking actions for any American President but sadly unsurprising coming from President Trump. https://t.co/yPgycqLyda NEW: Statement from @SpeakerRyan came. “We have no way to know what was said, but protecting our nation's secrets is paramount." (1/2) THIS: .@SpeakerRyan statement on WaPo story (2/2): "The speaker hopes for a full explanation of the facts from the administration." If true, deeply disturbing... https://t.co/gHc10i1pWv @benjaminwittes @BlogsofWar An eloquent friend who has served at high levels just said to me, "For the first time i… https://t.co/68MjJgaHfi This was a joke when I tweeted it. Turned out to be real. https://t.co/hD6oP6762z This is unacceptable, completely unacceptable... https://t.co/9cEmnhH6eY If true, this is a slap in the face to the intel community. Risking sources & methods is inexcusable, particularly… https://t.co/pheWzFNv4a All 3 statements sent via @PressSec: Tillerson, McMaster & Powell 👇👇 https://t.co/FUa2RNglG3 In 2011, Republican senators added amendment No. 1310 to NDAA to bar sharing classified info on MD with Russians. Will they speak out now? Pelosi: Trump has "jeopardized the security of the American people." https://t.co/PEFBf2dxWQ If the Washington Post report is true, it is very disturbing. Revealing classified information at this level is extremely dangerous. Report that Trump shared highly classified intelligence with Russians is deeply disturbing. House Intel needs to be… https://t.co/3nrwNg9vyk Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

On Monday, it was reported that Trump shared classified information with two Russian diplomats during an Oval Office meeting last week. On Tuesday, The New York Times reported that Trump nudged the FBI to drop its investigation into former national security adviser Michael Flynn. And on Wednesday, Deputy Attorney General Rod Rosenstein appointed a special counsel to take over the FBI's Russia investigation.

The Trump administration has expressed confidence amid the impeachment chatter, saying the White House believes it still has the support of congressional Republicans, according to CNN.

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