STRATFORD, Ont. -- Justin Bieber's ATV assault case is scheduled to be heard in a Stratford, Ont., court on July 14.

The 20-year-old pop star was not in court Monday when the trial date was set.

He was arrested and charged with dangerous driving and assault last Aug. 29 after a collision between a minivan and an ATV in a rural area northeast of Stratford.

A lawyer for the singer said Bieber was on a "peaceful retreat" with Selena Gomez -- his on-again, off-again girlfriend -- that was disrupted by paparazzi.

Ontario Provincial Police said the driver of the ATV and an occupant of the minivan "engaged in a physical altercation."

Const. Kees Wijnands said there were no injuries as a result of the collision, but wouldn't say whether there were any injuries from the altercation.

A court spokeswoman said the case would next be before the court on May 25, when a hearing would be held to confirm the July 14 trial date and determine whether the July 15 date would be required.

Just a few days before the incident, Bieber's car was hit from behind by a vehicle driven by a photographer in Hollywood.