PHOTO: Getty Images
Now playing
01:22
Trump: Mueller questions leak is disgraceful
WASHINGTON D.C - SEPTEMBER 27: Judge Brett Kavanaugh testifies to the Senate Judiciary Committee during his Supreme Court confirmation hearing in the Dirksen Senate Office Building on Capitol Hill September 27, 2018 in Washington, DC. Kavanaugh was called back to testify about claims by Christine Blasey Ford, who has accused him of sexually assaulting her during a party in 1982 when they were high school students in suburban Maryland.  (Photo by Jim Bourg-Pool/Getty Images)
PHOTO: Pool/Getty Images
WASHINGTON D.C - SEPTEMBER 27: Judge Brett Kavanaugh testifies to the Senate Judiciary Committee during his Supreme Court confirmation hearing in the Dirksen Senate Office Building on Capitol Hill September 27, 2018 in Washington, DC. Kavanaugh was called back to testify about claims by Christine Blasey Ford, who has accused him of sexually assaulting her during a party in 1982 when they were high school students in suburban Maryland. (Photo by Jim Bourg-Pool/Getty Images)
Now playing
02:34
Was Kavanaugh picked to block Mueller probe?
PHOTO: Raskin & Raskin
Now playing
02:45
Trump lawyers quietly driving talks with Mueller
Rod Rosenstein, deputy attorney general, listens during a Senate Judiciary Committee confirmation hearing for Brett Kavanaugh, U.S. Supreme Court associate justice nominee for U.S. President Donald Trump, not pictured, in Washington, D.C., U.S., on Tuesday, Sept. 4, 2018. If confirmed, Kavanaugh would fortify the high court's conservative majority, and spotlight the rightward march of the federal judiciary under Trump and the GOP-controlled Senate. Photographer: Andrew Harrer/Bloomberg via Getty Images
PHOTO: Bloomberg/Bloomberg/Bloomberg via Getty Images
Rod Rosenstein, deputy attorney general, listens during a Senate Judiciary Committee confirmation hearing for Brett Kavanaugh, U.S. Supreme Court associate justice nominee for U.S. President Donald Trump, not pictured, in Washington, D.C., U.S., on Tuesday, Sept. 4, 2018. If confirmed, Kavanaugh would fortify the high court's conservative majority, and spotlight the rightward march of the federal judiciary under Trump and the GOP-controlled Senate. Photographer: Andrew Harrer/Bloomberg via Getty Images
Now playing
01:02
The man who oversees Mueller's investigation
Michael Cohen, President Donald Trumps personal lawyer walks down Park Avenue in New York June 15, 2018 after leaving his hotel. - President Donald Trump's personal attorney Michael Cohen has indicated that he is willing to cooperate with federal investigators to alleviate the pressure on himself and his family. (Photo by TIMOTHY A. CLARY / AFP)        (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)
PHOTO: TIMOTHY A. CLARY/AFP/Getty Images
Michael Cohen, President Donald Trumps personal lawyer walks down Park Avenue in New York June 15, 2018 after leaving his hotel. - President Donald Trump's personal attorney Michael Cohen has indicated that he is willing to cooperate with federal investigators to alleviate the pressure on himself and his family. (Photo by TIMOTHY A. CLARY / AFP) (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)
Now playing
02:06
ABC: Cohen has done interviews with Mueller
U.S. Deputy Attorney General Rod Rosenstein delivers remarks on "Justice Department Views on Corporate Accountability" during the The Annual Conference for Compliance and Risk Professionals at the Mayflower Hotel May 21, 2018 in Washington, DC. (Chip Somodevilla/Getty Images)
PHOTO: Chip Somodevilla/Getty Images
U.S. Deputy Attorney General Rod Rosenstein delivers remarks on "Justice Department Views on Corporate Accountability" during the The Annual Conference for Compliance and Risk Professionals at the Mayflower Hotel May 21, 2018 in Washington, DC. (Chip Somodevilla/Getty Images)
Now playing
05:41
Rosenstein: 12 Russians charged with hacking
PHOTO: CNN
Now playing
00:48
Trump: I believe Manafort will tell the truth at plea deal
Trump interview with NBC's Lester Holt. May 11 2017
PHOTO: NBC
Trump interview with NBC's Lester Holt. May 11 2017
Now playing
01:12
Sekulow: NBC edited Trump interview on Comey
PHOTO: CNN
Now playing
02:04
Starr: Mueller is getting closer to the truth
PHOTO: NBC
Now playing
01:30
Giuliani: Truth isn't truth
NEW YORK, NY - NOVEMBER 15: Don McGahn, general counsel for the Trump transition team, gets into an elevator in the lobby at Trump Tower, November 15, 2016 in New York City. President-elect Donald Trump is in the process of choosing his presidential cabinet as he transitions from a candidate to the president-elect. (Photo by Drew Angerer/Getty Images)
PHOTO: Drew Angerer/Getty Images North America/Getty Images
NEW YORK, NY - NOVEMBER 15: Don McGahn, general counsel for the Trump transition team, gets into an elevator in the lobby at Trump Tower, November 15, 2016 in New York City. President-elect Donald Trump is in the process of choosing his presidential cabinet as he transitions from a candidate to the president-elect. (Photo by Drew Angerer/Getty Images)
Now playing
03:27
Trump attacks NYT report in morning tweet
NEW YORK, NY - JUNE 9: Don McGahn, lawyer for Donald Trump and his campaign, leaves the Four Seasons Hotel after a meeting with Trump and Republican donors, June 9, 2016 in New York City.
PHOTO: Drew Angerer/Getty Images
NEW YORK, NY - JUNE 9: Don McGahn, lawyer for Donald Trump and his campaign, leaves the Four Seasons Hotel after a meeting with Trump and Republican donors, June 9, 2016 in New York City.
Now playing
02:27
NYT: WH counsel cooperating with Mueller probe
WASHINGTON, DC - JUNE 21:  Special counsel Robert Mueller (2nd L) leaves after a closed meeting with members of the Senate Judiciary Committee June 21, 2017 at the Capitol in Washington, DC. The committee meets with Mueller to discuss the firing of former FBI Director James Comey.  (Photo by Alex Wong/Getty Images)
PHOTO: Alex Wong/Getty Images
WASHINGTON, DC - JUNE 21: Special counsel Robert Mueller (2nd L) leaves after a closed meeting with members of the Senate Judiciary Committee June 21, 2017 at the Capitol in Washington, DC. The committee meets with Mueller to discuss the firing of former FBI Director James Comey. (Photo by Alex Wong/Getty Images)
Now playing
02:07
The Mueller investigation: Who could be next?
Now playing
02:20
Davis describes facing Mueller grand jury
PHOTO: CNN
Now playing
01:36
Analyst: Giuliani doing great harm to Trump
PHOTO: CNN
Now playing
02:00
Roger Stone: I'll never testify against Trump
(CNN) —  

President Donald Trump on Tuesday slammed special counsel Robert Mueller’s investigation into potential obstruction of justice by him, continuing Trump’s crusade against what he believes is a “witch hunt.”

“It would seem very hard to obstruct justice for a crime that never happened! Witch Hunt!” the President tweeted early Tuesday.

In another tweet, Trump called the leak of the questions “disgraceful.”

“So disgraceful that the questions concerning the Russian Witch Hunt were ‘leaked’ to the media. No questions on Collusion. Oh, I see … you have a made up, phony crime, Collusion, that never existed, and an investigation begun with illegally leaked classified information. Nice!” he tweeted.

Mueller is interested in asking Trump a variety of questions related to the 2016 campaign and people from Trump’s personal life, business interactions and administration, according to Mueller’s list of questions for Trump obtained and reported on by The New York Times.

The topics, which CNN previously reported can be classified into four main areas, involve questions about Trump’s former national security adviser Michael Flynn, former FBI Director James Comey, Attorney General Jeff Sessions and any Russian coordination with his presidential campaign, according to The New York Times.

Despite the President’s claim that there were “no questions on collusion,” there were many questions on collusion in the leaked questions, according to the Times.

It’s unclear to whom Trump was referring about the leak. On Monday evening, a source reiterated to CNN that the questions had been written by Trump’s legal team, extrapolating from topics discussed with the special counsel, and confirmed the accuracy of topics as reported on by The New York Times.

CNN’s Sophie Tatum, Evan Perez and Gloria Borger contributed to this report.