In a span of two hours, Trump posted six tweets regarding Comey and panning the former G-man's new book, "Higher Loyalty: Truth, Lies And Leadership."
"Slippery James Comey, a man who always ends up badly and out of whack (he is not smart!), will go down as the WORST FBI Director in history, by far!" Trump stated in one of his tweets.
The presidential Twitter tempest came ahead of Sunday night's broadcast of Comey's interview with ABC News chief anchor George Stephanopoulos on "20/20."
Trump, who has taken to Twitter to blast Comey in the past, began a new round of social media attacks on Friday when he tweeted that Comey was a "proven LEAKER & LIAR."
Comey shot back Sunday afternoon with a Tweet that didn't mention Trump by name but inferred that the current occupant of the Oval Office is ethically challenged.
"My book is about ethical leadership & draws on stories from my life & lessons I learned from others. 3 presidents are in my book: 2 help illustrate the values at the heart of ethical leadership; 1 serves as a counterpoint. I hope folks read the whole thing and find it useful," Comey tweeted.
In his book, Comey compares Trump to a Mafia boss who demanded his "loyalty" during a one-on-one dinner.
"The demand was like Sammy the Bull’s Cosa Nostra induction ceremony,” Comey writes in his book, referring to Salvatore “Sammy the Bull” Gravano, a former leader of the Gambino crime family, whose testimony ultimately helped convict mob boss John Gotti.
Comey was appointed FBI director by former President Barack Obama in September 2013 and was fired by Trump on May 9, 2017. Trump said he canned Comey "because he wasn't doing a good job."
About a month after he was dismissed, Comey told the Senate Intelligence Committee that he believed Trump fired him to impede the FBI’s investigation into Russia's meddling in the 2016 U.S. presidential election.
"I was fired in some way to change -- or the endeavor was to change -- the way the Russia investigation was being conducted," Comey told the committee.
In his book, set to go on sale on Tuesday, Comey offers a no-holds-barred assessment of Trump, calling the nation's 45th president "unethical, and untethered to truth and institutional values."
"His leadership is transactional, ego-driven and about personal loyalty," Comey writes.
In his flurry of tweets Sunday, Trump suggested that Comey should be jailed for allegedly leaking classified information and allegedly lying to Congress. The president also made reference to $675,000 in donations that went to Jill McCabe's unsuccessful 2015 campaign for a Virginia state Senate Seat from the Virginia Democratic Party and Common Good VA.
Jill McCabe is the wife of Andrew McCabe, the former deputy director of the FBI who was fired by U.S. Attorney General Jeff Sessions two days before he was scheduled to retire.
"The big questions in Comey's badly reviewed book aren't answered like, how come he gave up Classified Information (jail), why did he lie to Congress (jail), why did the DNC refuse to give Server to the FBI (why didn't they TAKE it), and why the phony memos, McCabe's $700,000 & more?" Trump tweeted.
"Unbelievably, James Comey states that Polls, where Crooked Hillary was leading, were a factor in the handling (stupidly) of the Clinton Email probe. In other words, he was making decisions based on the fact that he thought she was going to win, and he wanted a job. Slimeball!" Trump tweeted Sunday.
In yet another tweet, Trump accused Comey of throwing former U.S. Attorney General Loretta Lynch "under the bus."