North Bay police say they have arrested and charged a former high school teacher in a historical sexual assault case.

Police say 74-year-old Walter Llewellyn Sheppard, also known as Lew Sheppard, is charged with indecent assault on a female student, who he taught between 1978 and 1982. They made the arrest on July 22.

The man, from Lindsay, was employed as a secondary school teacher in North Bay until 1989.

Police are concerned that there may be more victims and are asking anyone with information to contact Detective Constable Erin Pemberton at 705-497-5555.

Anonymous tips can be submitted to Near North Crime Stoppers at 1-800-222-8477 or online.