New Jersey Gov. Chris Christie (R) on Tuesday expressed deep disappointment that details of his vice presidential vetting were leaked to the authors of a new book about the 2012 election.

"It's very disappointing," Christie told CNN. "I think it's a complete violation of trust of me and the spirit within which I entered that process."

Christie added: "There’s nothing in there that I have a huge problem with, but it is a violation of trust."

Christie also said that Mitt Romney called him shortly after the leaks went public and apologized for them.

"Mitt called me right away, and I could tell he was really embarrassed and outraged about it," Christie said, adding that it was the appropriate response.

According to the book, "Double Down: Game Change 2012," by Mark Halperin and John Heilemann, Romney advisers had major reservations about Christie's weight and physical health, along with concerns about Christie having been investigated by the Justice Department for exceeding travel reimbursement rates as a federal prosecutor and for a defamation lawsuit that resulted in Christie apologizing to a political opponent.

There were some hard feelings after the campaign due to Christie's embrace of President Obama following Superstorm Sandy, which happened a week before the 2012 election. Some Republicans thought it gave Obama a late boost.

Christie granted the CNN interview as voters head to the polls to determine his reelection fate. He is expected to win by upwards of 20 or 30 points.

Updated at 4:14 p.m.