Justin Bieber was arrested on assault and dangerous driving charges stemming from an alleged fight after his ATV collided with a mini-van in Canada Friday, a police spokesman told CNN Tuesday. The alleged incident happened on a road in Perth County, Ontario, the community where Bieber, 20, lived as a child. "Investigation revealed that after colliding, the driver of the ATV and an occupant of the minivan engaged in a physical altercation," Ontario Provincial Police spokesman Kees Wijnands said. Bieber's lawyer said the singer was being chased by people with cameras when the incident happened. Bieber was enjoying a "peaceful retreat" at his father's home when it was interrupted by paparazzi, the lawyer said. Online photos showed Bieber and girlfriend Selena Gomez cruising on an ATV Friday. Bieber, who is already facing an assault charge in Toronto, was released on "a promise to appear" and ordered to answer the charges at a hearing in Stratford, Ontario, on September 29, Constable Wijnands said. The young singer is on probation in Los Angeles for a vandalism conviction that resulted from his admission that he egged a neighbor's home last January. It would be up to the California judge to decide if the Canadian arrest warrants a probation revocation hearing, according to the spokeswoma for the Los Angeles prosecutor. Justin Bieber pleads no contest in egging case, gets probation Bieber made a $50,000 donation to a youth charity as part of a plea deal to settle a Miami drunken driving case last month.