Trump Calls Mueller's Russia Probe an 'Illegal Investigation Totally' but Says He'll 'Probably' Answer Questions

President Donald Trump called special counsel Robert Mueller's investigation into suspicions of collusion between his 2016 campaign and Russia "illegal," but said he will "probably" answer questions put to him by investigators.

"There should have never been a special counsel, in my opinion," Trump told Fox News's Laura Ingraham in an interview aired on her show Monday night.

"It's an illegal investigation, totally, and a lot of people agree with me, a lot of people on your show and other shows agree. There was no collusion. There was never any collusion. It shouldn't have ever happened."

Trump, who did not clarify on what legal basis he believes the investigation by his own justice department to be unlawful, also said he has "made everything available" to investigators: "You know why? Because I have nothing to do with Russia."

Mueller has notched up a number of indictments, guilty pleas and convictions over the course of his ongoing investigation, which is also looking at Russian interference in the 2016 election more broadly, including some of those closest to Trump.

He is also reportedly probing whether the president attempted to obstruct justice by disrupting the investigation, including by firing former F.B.I. Director James Comey, who held oversight before it was handed to the special counsel.

One of the major focal points of the investigation is a summer 2016 meeting at Trump Tower in New York City between senior members of the campaign, including the president's eldest son Donald Trump Jr., and a Kremlin-linked Russian lawyer touting dirt on Hillary Clinton.

The president's legal team is negotiating with Mueller about answering questions the special counsel has. Rudy Giuliani, one of Trump's lawyers, has spoken openly about his fears that the president could incriminate himself if he sat down for questioning by Mueller.

"He's not getting the president on any kind of obstruction of justice questioning. It's just not going to happen," Giuliani said on Fox News in June.

"All of us know he shouldn't testify unless we get everything we want and he wants. He wants to testify. His complaint is 'I did nothing wrong. I can stand up to any questioning.' What he doesn't realize is how pernicious they are."

Ingraham asked Trump if he would answer written questions put to him by Mueller.

"We're going to do—I mean, it's ridiculous that I have to do anything because we didn't do anything—but we will probably do something, yes, where we'll respond to some questions," Trump replied.

The special counsel's office declined Newsweek's request for comment.

Mueller is said to be close to wrapping up the investigation, which Trump has labeled a "witch hunt" against him and his allies, accusing it of political bias. Two unnamed U.S. officials. told Bloomberg Mueller may release his findings after November's midterm elections.

Donald Trump Mueller questions
President Donald Trump speaks to supporters during a rally at the Southern Illinois Airport on October 27, in Murphysboro, Illinois. Trump told Laura Ingraham on Fox News that he thinks special counsel Robert Mueller's investigation is "illegal." Scott Olson/Getty Images