The shock move comes days after Comey testified on Capitol Hill about the FBI's investigation into Russia's election meddling and a possible collusion between the country and Trump's campaign.
Former Federal Bureau of Investigation director James Comey has said in a farewell letter to his colleagues in the agency that US President Donald Trump has the right to fire him for any reason, "or for no reason at all", a day after he was unceremoniously removed from his post.
Comey confessed that he leaked the information about his interaction with the US president.
The White House previously said Trump only decided to oust Comey after meeting with Attorney General Jeff Sessions on Monday and Deputy Attorney General Rod Rosenstein, who discussed reasons for removing the director.
Comey is scheduled to appear before the Senate Intelligence Committee on Thursday.
"I just fired the head of the FBI. He was crazy, a real nut job," Trump told Lavrov, according to a media report.
"There should be no fuzz on this whatsoever. The Russians interfered in our election during the 2016 cycle," Comey said.
Comey did not make any major new revelations about alleged links between Trump or his associates and Russia.
Trump had said he is ready to testify over Comey conversations.
Trump's assertion came after he branded Comey as a "leaker".
Wray is a litigation attorney with law firm King & Spalding in Washington and Atlanta.
He said it has now become clear that the ex-FBI chief was one of the leakers of 'privileged information' and should be investigated.
Texas Representative Al Green, who has been one of the most outspoken proponents of impeachment proceedings against Trump, and even made a call on the House floor last month, was joined by California Representative Brad Sherman to move forward with the next legislative step in announcing the long-shot bid.
The White House has said there is no evidence of a Trump-Russia collusion, hours after the Federal Bureau of Investigation confirmed that it was probing Russia's meddling in last year's presidential polls, including possible links between the Trump campaign and Moscow.
Comey states that Trump asked him on several occasions to publicly state that he was not under investigation.
Wray, 50, received an overwhelmingly bipartisan support -- 92-5 votes -- on the Senate floor.
The President has maintained that he has nothing to do with Russia.
Investigators have also been looking for any evidence of possible financial crimes by Trump associates.
Hillary Clinton has blamed the Federal Bureau of Investigation for her loss at the hands of her Republican challenger Donald Trump, claiming the decision to revive the probe into her email accounts stopped her momentum towards a historic win.
Trump said a thorough investigation will prove that no such collusion took place.
Another major media outlet for the first time projected Hilary's electoral college votes below the half way mark of 270.
The FBI chief also trashed President Donald Trump's allegation that his Trump Tower was wiretapped on the orders of his predecessor Barack Obama.
The FBI chief said that in the last presidential elections, the Russians were not able to change the actual vote tally, but one day they might.
Trump's apparent confirmation that he is under probe for obstruction of justice by special counsel appointed to probe alleged Russian meddling in the 2016 presidential polls came a day after a Washington Post report pointed to such an investigation.
Asked whether the president sought a pledge of loyalty from her, Haley replied, 'No'.
The new probe comes nearly four months after the FBI director announced the Bureau would not recommend criminal charges against Clinton for what it dubbed "extreme careless" use of a private email server while secretary of state.
The Federal Bureau of Investigation Director James Comey said the money was worth it.
Trump again denies any collusion between the Trump campaign and the Russians.
A classified report delivered by the Justice Department to House and Senate investigators does not confirm President Donald Trump's allegations.
"San Bernardino involved two killers who were radicalised for quite a long time before their attack," FBI Director James Comey said.
'He is a good guy. I hope you can let this go,' Trump had said, adding that Flynn had done nothing wrong.
"I was on the way to winning until the combination of Jim Comey's (sic) letter on October 28th and Russian WikiLeaks raised doubts in the minds of people," she said.
Federal Bureau of Investigation Director James Comey has asked the Department of Justice to refute US President Donald Trump's allegations that his predecessor Barack Obama had ordered wiretapping of the Trump Towers during the presidential elections, at least two media reports have said.
Mueller has already interviewed several of the close aides and family members of Trump over the issue.
The United States senate on Tuesday confirmed the nomination of James Coney, a former Bush Administration official, as the next director of the Federal Bureau of Investigation. Coney, who was confirmed by 93-1 votes by the senate replaces, Robert Muller as the FBI director who served in this position for a decade.
James Comey called for a national moment of reflection, in which everybody, regardless of partisan views, to evaluate the President and to consider whether he presents a threat to America itself.
Clinton has blamed her presidential election loss on the "unprecedented" events of Russian cyber hacking and the Federal Bureau of Investigation's probe into her use of her personal e-mail server.
In "A Higher Loyalty: Truth, Lies, and Leadership", James Comey will "explore what good, ethical leadership looks like and how it drives sound decisions", according to Pan Macmillan, which has acquired the publishing rights in the United Kingdom and the Commonwealth excluding Canada.
The Federal Bureau of Investigation has once again courted controversy as it released heavily redacted files from its 2001 investigation of President Bill Clinton's pardon of fugitive financier Marc Rich, just one week from election day.
A Democratic lawmaker has called for impeachment of United States President Donald Trump for his alleged involvement in obstruction of justice, after news reports revealed that he had asked the Federal Bureau of Investigation to stop investigations against former national security advisor Michael Flynn.