WASHINGTON, DC - MARCH 07:  Deputy U.S. Attorney General nominee Rod Rosenstein is sworn in prior to testimony before the Senate Judiciary Committee March 7, 2017 in Washington, DC. During the hearing, Democratic senators pressed Rosenstein to appoint a special prosecutor in an ongoing federal inquiry into Russian influence in the U.S. presidential election.  (Photo by Win McNamee/Getty Images)
Win McNamee/Getty Images
WASHINGTON, DC - MARCH 07: Deputy U.S. Attorney General nominee Rod Rosenstein is sworn in prior to testimony before the Senate Judiciary Committee March 7, 2017 in Washington, DC. During the hearing, Democratic senators pressed Rosenstein to appoint a special prosecutor in an ongoing federal inquiry into Russian influence in the U.S. presidential election. (Photo by Win McNamee/Getty Images)
Now playing
01:03
The man behind Comey's firing
Getty Images
Now playing
01:12
Trump: I didn't fire Comey because of Russia
Ousted FBI director James Comey listens during a hearing before the Senate Select Committee on Intelligence on Capitol Hill June 8, 2017 in Washington, DC.
BRENDAN SMIALOWSKI/AFP/Getty Images
Ousted FBI director James Comey listens during a hearing before the Senate Select Committee on Intelligence on Capitol Hill June 8, 2017 in Washington, DC.
Now playing
01:20
Memos add new details to Comey's story
Conway Cuomo 04162018
CNN
Conway Cuomo 04162018
Now playing
01:48
Conway: All Comey had to do was keep mouth shut
Now playing
01:22
Toobin: Comey's account devastating for Trump
Rick Santorum
Rick Santorum
Now playing
01:29
Santorum rips Comey's 'tell-nothing' book
Team Coco
Now playing
03:50
Comey on Conan: Trump spy claims are made up
photo illustration: getty images/flatiron books/allie schmitz/cnn
Now playing
01:44
Trump unloads on Twitter at Comey
Now playing
04:46
Cooper questions Trump's respect for the law
Kellyanne Conway newday 04162018
CNN
Kellyanne Conway newday 04162018
Now playing
02:01
Conway: Comey's FBI was a hot mess
comey abc 2
ABC
comey abc 2
Now playing
02:49
Comey: Briefing Trump felt like out-of-body experience
WASHINGTON, DC - JUNE 08: Former FBI Director James Comey leaves a closed session with the Senate Intelligence Committee in the Hart Senate Office Building on Capitol Hill June 8, 2017 in Washington, DC. Comey said that President Donald Trump pressured him to drop the FBI's investigation into former National Security Advisor Michael Flynn and demanded Comey's loyalty during the one-on-one meetings he had with president. (Photo by Drew Angerer/Getty Images)
Drew Angerer/Getty Images
WASHINGTON, DC - JUNE 08: Former FBI Director James Comey leaves a closed session with the Senate Intelligence Committee in the Hart Senate Office Building on Capitol Hill June 8, 2017 in Washington, DC. Comey said that President Donald Trump pressured him to drop the FBI's investigation into former National Security Advisor Michael Flynn and demanded Comey's loyalty during the one-on-one meetings he had with president. (Photo by Drew Angerer/Getty Images)
Now playing
00:52
White House: Comey a 'disgraced partisan hack'
ABC
Now playing
02:04
Comey: Trump unfazed by Russian meddling
CNN
Now playing
01:20
Clapper: Comey accounts are accurate
CNN Illustration/Getty Images
Now playing
02:08
Comey details 2017 meeting with Trump in book
WASHINGTON, DC - JANUARY 22: U.S. President Donald Trump (L) shakes hands with James Comey, director of the Federal Bureau of Investigation (FBI), during an Inaugural Law Enforcement Officers and First Responders Reception in the Blue Room of the White House on January 22, 2017 in Washington, DC. Trump today mocked protesters who gathered for large demonstrations across the U.S. and the world on Saturday to signal discontent with his leadership, but later offered a more conciliatory tone, saying he recognized such marches as a "hallmark of our democracy." (Photo by Andrew Harrer-Pool/Getty Images)
Pool/Getty Images North America/Getty Images
WASHINGTON, DC - JANUARY 22: U.S. President Donald Trump (L) shakes hands with James Comey, director of the Federal Bureau of Investigation (FBI), during an Inaugural Law Enforcement Officers and First Responders Reception in the Blue Room of the White House on January 22, 2017 in Washington, DC. Trump today mocked protesters who gathered for large demonstrations across the U.S. and the world on Saturday to signal discontent with his leadership, but later offered a more conciliatory tone, saying he recognized such marches as a "hallmark of our democracy." (Photo by Andrew Harrer-Pool/Getty Images)
Now playing
02:21
Trump and Comey's ups and downs
Ousted FBI director James Comey listens during a hearing before the Senate Select Committee on Intelligence on Capitol Hill June 8, 2017 in Washington, DC.
BRENDAN SMIALOWSKI/AFP/Getty Images
Ousted FBI director James Comey listens during a hearing before the Senate Select Committee on Intelligence on Capitol Hill June 8, 2017 in Washington, DC.
Now playing
02:25
Timeline of Trump firing James Comey
(CNN) —  

Deputy Attorney General Rod Rosenstein has told officials he is unhappy with the way the White House handled the firing of FBI Director James Comey on Tuesday, sources familiar with the matter tell CNN.

Justice Department spokesperson Sarah Flores, however, said Rosenstein did not threaten to resign over Comey’s ouster, contrary to The Washington Post and other press reports. Flores said she spoke with Rosenstein.

Comey was addressing employees in the FBI’s Los Angeles field office when a television screen tuned to Fox News flashed a banner saying he had resigned. He had not, and he took it as a joke. But soon thereafter, CNN on another television monitor nearby reported that he had been fired.

Rosenstein also is unhappy about the fact that White House officials have tried to pin the Comey firing on him, using his reputation as cover for how it was done, the sources said.

Vice President Mike Pence and deputy White House spokeswoman Sarah Huckabee Sanders on Wednesday repeatedly cited Rosenstein’s memo on Comey recommending the FBI director’s removal, leveraging his reputation and bipartisan Senate confirmation vote

“The new deputy attorney general, who was just sworn in two weeks ago and confirmed by the Senate, came to work,” Pence told reporters at the Capitol Wednesday morning. “He is a man of extraordinary independence and integrity and a reputation in both political parties of great character, came to work, sat down and made the recommendation for the FBI to be able to do its job that it would need new leadership.”

Sanders, at the White House briefing, called Rosenstein “a man of upstanding character and essentially the gold standard at the Department of Justice.”

She added, “we are incredibly confident in his abilities, as, I believe, you can tell by the rest of the Senate, including many Democrats, are as well. Given the fact that he was confirmed 94 to six and had overwhelming praise from both sides of the aisle, I think there’s complete confidence in him. And another reason, frankly, for Director Comey to be out of the way, so that they can have somebody leading this effort that everybody across the board has respect and confidence in.”

CNN’s David Wright contributed to this report.