Vancouver Police say a 70-year-old English-as-a-second-language tutor has been charged with sexual interference and there may be more victims in British Columbia and Ontario.
Officers want to speak to students and parents who may have had contact with Christopher Jon Adams.
Investigators believe Adams, who uses several variations of his legal name, lived and worked in Ontario before moving to B.C.
He has links to Vancouver's Chinese-Canadian community and has advertised his tutoring services online and Asian newspapers based in the city.
Police say Adams was hired to tutor a 12-year-old girl after she arrived in Canada in 2013 and that an investigation began after allegations he may have touched the child for sexual purposes.
Adams has been released on several conditions, pending his next court date.