James Comey characterized President Donald Trump as a “mob boss” in an interview set to air Sunday on ABC.

In his first televised interview in advance of the upcoming release of his book, "A Higher Loyalty," the former FBI director talked with ABC's George Stephanopoulos about his firing by Trump last year and his relationship with the president.

Trump fired Comey in May 2017, 10 months into the investigation of possible collusion with Russia by the Trump campaign during the 2016 presidential election.

According to a trailer advertising the interview, Comey is also asked about the investigation into Hillary Clinton's use of a private email server, and whether he has information that would be hurtful to the president.

According to a story from Axios, a source who was present at the taping said Comey reveals things during the interview that are "going to shock the president and his team."

Comey has interviews scheduled with CNN and MSNBC on April 19, with Fox News on April 26 and with PBS on April 30. Comey’s book is set for release on April 17.

The interview, taped at Comey’s Washington D.C.-area home, airs at 10 p.m. ET on ABC.

In this photo from Thursday, Feb. 19, 2004, FBI Director Robert Mueller, left, Deputy Attorney General James B. Comey, head of the Justice Department's corporate fraud task force, and Assistant Attorney General Christopher Wray of the Justice Department Criminal Division, right, announce charges against Enron chief executive Jeffrey Skilling, in Washington. Today, 14 years later in April 2018, Christopher Wray is President Donald Trump's FBI director, taking over after Trump fired James B. Comey May 9, 2017, who had served as FBI director since 2013. On May 17, 2017. Robert Mueller was appointed as a special counsel to investigate Russian meddling in the U.S. election and whether there were any links or coordination between Russian government and individuals associated with the campaign of President Donald Trump. (AP Photo/J. Scott Applewhite)

Credit: J. Scott Applewhite

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Credit: J. Scott Applewhite