Former Republican presidential candidate Chris Christie said President Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE apologized to him after issuing a false attack against the former New Jersey governor during the 2016 presidential campaign.

“He called me directly and he said, ‘I apologize, I know I went over the line, that wasn’t right, and I won’t do it again. Let’s not have you and I fighting over stuff like that,’ ” Christie said Thursday on CNN, noting that the two had been friends for decades.

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“I accepted the apology.”

Trump's apology came after he said, without evidence, that Christie knew of the 2013 lane closures on the George Washington Bridge and was aware they were meant as retribution against a local mayor for withholding support for Christie’s reelection bid. Trump's remarks came after Christie was endorsed by the New Hampshire Union Leader.

In Christie's book, he criticized Trump for doing so, saying "I had no problem with hardball politics. I had some talent for that myself. But knowingly lying because you were pissed that somebody else got a newspaper endorsement? To me that was over the line. You don't do that to anyone, let alone a friend of long standing."

The closures sparked intense backlash, with several Christie aides being found guilty in a federal probe on a slew of charges regarding misconduct and conspiracy.

Christie, has denied any knowledge of the incident that has come to be known as "Bridgegate."

The New Jersey Republican later endorsed Trump, who is notorious for refusing to publicly apologize, and aided in his White House transition effort.