Collins: Comey should have waited to release his memoir

Sen. Susan CollinsSusan Margaret CollinsPressure rising on GOP after Trump–DOJ fight’s latest turn Trump's plan to claw back spending hits wall in Congress Dem rep to launch discharge petition to force net neutrality vote in House MORE (R-Maine) said on Sunday that former FBI Director James ComeyJames Brien ComeyMystery in Mueller probe: Where’s the hacking indictment? Press: Why Trump should thank FBI Trump administration sued for not releasing FBI morale survey results MORE should have waited to release his highly anticipated memoir due to the ongoing Russia probe. 

"Don't write a book in the middle of an investigation that is ongoing," Collins told NBC's Chuck Todd on "Meet the Press." 

Collins went on to express concerns that the book could potentially interfere with special counsel Robert MuellerRobert Swan MuellerSasse: US should applaud choice of Mueller to lead Russia probe MORE's probe into alleged ties between the Trump campaign and Russia's election meddling. 

"I cannot imagine why an FBI director would seek to essentially cash in on a book when the investigation is very much alive. He should have waited to do his memoir," she said. 

The senator also hit the former intelligence officer on his handling of past investigations and leaking of classified documents. 

"If I were advising a future FBI director, I would say two things. One, always follow the Department of Justice's protocols and guidelines, which unfortunately James Comey did not do with the Hillary ClintonHillary Diane Rodham ClintonClinton backs Georgia governor hopeful on eve of primary Pressure rising on GOP after Trump–DOJ fight’s latest turn Press: Why Trump should thank FBI MORE investigation, and he did not do when he leaked documents, which were FBI work documents, to a friend of his, knowing that they would go to the press," she said. 

Collins's remarks follow Comey's media blitz promoting his memoir, "A Higher Loyalty: Truth, Lies, and Leadership."

Comey has appeared on ABC's "20/20" and "The View," CBS's "Late Show with Stephen Colbert," NBC's "Today," and CNN's "The Lead," among numerous other television and radio appearances.

Comey also appeared at a town hall hosted by The New Yorker on Thursday night, where he told editor David Remnick that he doesn't "crave to be known," while stating President TrumpDonald John TrumpWH aides intentionally compose Trump tweets with grammatical mistakes: report Holder: DOJ, FBI should reject Trump's requests Ex-Trump campaign adviser rips claims of spy in campaign: It's 'embarrassing' MORE has a hunger for affirmation.

He has defended his decisions about the 2016 investigation into Clinton's emails and giving some of his memos to a friend in order to make the contents public, and said his decision to release the book doesn't hurt Mueller's ongoing investigation even if he's called upon to be a witness.

“My testimony is already locked down,” Comey told WTOP. “I gave it under oath to the Senate a year ago. In fact, even before then, it was locked down because I wrote memos about key events and so there really isn’t a serious risk that my story will somehow change. It’s in concrete, frankly, and I’ve offered it to the Senate and to the American people, already.”