Former White House press secretary Sean Spicer Friday told ABC's "Good Morning America" that he does not believe there was anything done that he thought was "inappropriate or illegal" when it comes to activities that took place during the 2016 campaign season.

"There is an investigation," Spicer told show anchor George Stephanopoulos. "I'm not going to get in the way of it, but as far as I know and from what I saw, no, there was nothing ever done that I thought was inappropriate or illegal."

Spicer noted that he was part of the Trump team for most of the end part of the president's campaign, and as for claims that the campaign colluded with Russia, "I know that didn't happen."

"There were several folks in the media that didn't give us credit for colluding with ourselves, never mind with any kind of foreign government," Spicer said. "So to suggest that happened, and the underlying premise of this whole thing, I think, it's pretty clear that there was no collusion."

Spicer said he also believes Trump was within his rights to fire former FBI Director James Comey.

"I think as far as the firing of James Comey, it's been pretty clear the president has the authority to fire anyone within the federal government that he sees fit, isn't doing the duty that is appropriate for the job," Spicer said.

"I don't think there's any question about his ability to fire Jim Comey, or anyone else in the federal government."

Spicer also said that an article in Friday's edition of The New York Times that says special counsel Robert Mueller's investigation into the collusion matter has put a focus on the possibility of obstruction of justice is "not some kind of shocker."

"It's no secret the president's made it very clear that he didn't want, he didn't feel as though Attorney General Jeff Sessions need to recuse himself," said Spicer, "and that he wanted a robust defense of something he doesn't think that he's been wrongly accused of."

Spicer was still in office when Comey was fired, and at that time he laid the matter at the feet of Deputy Attorney General Rod Rosenstein. He said Friday he went with the information he had at the time.

Meanwhile, Spicer also discussed the hotly contested new book by Michael Wolff, "Fire and Fury: Inside the Trump White House," whose claims the Trump White House and allies are strongly denying.

Wolff claims he had wide access to the West Wing, which the president has denied, and Spicer said he does believe there is some question about what Trump authorized and how Wolff set up his meetings with key staffers, including former chief strategist Steve Bannon, who was quoted as making several bombshell claims in his interviews.

"I met with him and several authors," Spicer said. "He was writing a book on the president and wanted to introduce himself to me, and I afforded him the courtesy and spoke to him several times about questions that he had, but it's pretty clear from what I understand that he met with Steve Bannon on multiple occasions."

Bannon, continued Spicer, is the "only one that I'm aware of right now that's actually admitted to meeting with him."

Spicer said one of the major problems with the book is that there may be some anecdotes in it that "may be true," but the problem is, "if it's 10 percent, or 20 percent, or 50 percent that isn't true, the reader is not left to know which is true and which is not."

Spicer admitted that some of the quotes involving himself in Wolff's books are true, but the context in which he writes about them are not.

"I can say something to you right now and you could weave it into a story in three weeks," said Spicer. "Is the quote accurate. Sure. Is the context in which I'm giving it in, no."