The incident took place after Bieber attended a Toronto Maple Leafs game on Dec. 29.
During the drive, an altercation broke out between a passenger and the driver.
The police didn’t give information on the degree of involvement of the singer in the attack.
“The Toronto Police Service requested that Justin Bieber appear in Toronto today to face an allegation of assault relating to an incident on December 29, 2013,” a lawyer for the singer said in a statement to E! News. “We anticipate that this matter will be treated as a summary offense, the equivalent of a misdemeanor in the United States.
“Our position is that Mr. Bieber is innocent. As the matter is now before the Court, it would be inappropriate to address the specifics of either the allegation or of our defense at this time.”
An arraignment is scheduled for Feb. 14, but Bieber may not be required to appear in person.
It’s a new episode in a long series of setbacks for the young star.
Last week the teen star was charged with DUI, resisting arrest and driving without a valid license in the streets of Miami.