He questioned Comey's intelligence and place in history, writing, "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!"
As a warm up to the joint missile attack on Syria, President Trump and Sarah Huckabee launched verbal missiles at James Comey and his new memoir.
Comey recommended no criminal charges to the Justice Department in the Clinton email probe, instead reprimanding the former Secretary of State as "extremely careless". In the book, Comey compares Trump to a mob boss who demands loyalty from all those around him, even if it means twisting the truth.
Trump recently accused Comey of leaking classified information, saying he should be prosecuted for lying to Congress under oath.More news: PFA Player of the Year shortlist revealed
Mr Comey, who was appointed by Barack Obama in 2013, has kept quiet about his time under Mr Trump for almost a year, with the interview and book finally breaking his silence.
Trump has furiously lashed out at Comey in recent days.
Many social media users however took a dim view of Comey's revelations and of his book as a whole.
Trump slammed Comey on Friday morning and called him a "proven LEAKER & LIAR" and a "weak and untruthful slime ball". Just days after Trump fired Comey, the president said he did it because of "this Russian Federation thing".More news: Sridevi Wins Best Actress National Award Posthumously for 'Mom'
Trump has denied any such collusion and reportedly has considered firing Mueller, as well as Attorney General Jeff Sessions and Deputy Attorney General Rod Rosenstein out of anger over the probe. The former Federal Bureau of Investigation director describes Trump's skin color as being lighter around the eyes as if he had been wearing tanning bed goggles.
Mr Comey, who was sacked by Mr Trump past year, has talked about his interactions with the President in an extended interview with ABC News. Clinton herself has pointed to Comey's actions in explaining her presidential election loss.
Comey's disclosure shortly before the election that the FBI had reopened its investigation into her email use enraged Democrats. There is no indication Comey is under investigation for doing either.
In a clip released Saturday by ABC News, George Stephanopoulos asks Comey about his motivations in revealing that information to Congress. "It was nearly an out-of-body experience for me".More news: Friday of protest in Gaza
"I honestly never thought these words would come out of my mouth, but I don't know whether the current president of the United States was with prostitutes peeing on each other in Moscow in 2013", Comey told ABC. "But I don't know".
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