A 64-year-old driving instructor is facing charges for two alleged sexual assaults against one of his students, a 19-year-old woman, during her in-car driving lessons.

The woman took lessons from the instructor between July and August, Toronto Police said in a release Saturday morning. Both of the alleged assaults happened during this time.

Police believe there may be more victims.

Samuel Dixon of Toronto faces two charges of sexual assault.

He’s scheduled to appear in court September 27.