Washington (CNN) Chris Christie paints a vengeful picture of President Donald Trump's son-in-law and top adviser Jared Kushner -- whose family Christie has feuded with for years -- in an upcoming memoir, according to excerpts reported on by Axios and The Guardian.

According to The Guardian, the former New Jersey governor writes in his book, "Let Me Finish," which is scheduled to be released later this month, that Kushner was behind his departure from the Trump inner circle after the 2016 election.

"Steve Bannon ... made clear to me that one person and one person only was responsible for the faceless execution that Steve was now attempting to carry out. Jared Kushner, still apparently seething over events that had occurred a decade ago," Christie said in his book.

The Guardian reported that Bannon told him at his firing as Trump's transition chairman that "the kid's been taking an ax to your head with the boss ever since I got here," referring to Kushner.

Axios reported that Christie wrote: "In Bannon-speak, the KID is only one person. Not Donald Jr. Not younger son Eric. Not Ivanka or Tiffany. The kid is Jared Kushner, the husband of Ivanka Trump and the son of the real estate developer Charles Kushner, a man I once sent to prison."

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