A 34-year-old high school teacher in Richmond Hill is facing charges related to the alleged sexual assault of a student.
Police in York Region say the alleged offences began in 2011.
Christopher Ng, 34, is listed as a teachers of Business Education, Math and Music at St Theresa of Lisieux Catholic High School in Richmond Hill.
He's charged with sexual assault and two counts of sexual exploitation, and is due in court next month.
Police say the girl was under the age of 18, at the time of the alleged offences.
Officers are keen to make sure there are no other potential victims out there.
(with files from Canadian Press)