A 30-year-old group home employee in Oshawa, Ont., is charged with repeatedly sexually assaulting a 13-year-old boy in her care.

Durham Regional Police say the assaults occurred between September and January. An investigation launched in February led to the Wednesday arrest of a Clarington woman.

She faces counts of sexual assault, sexual interference, and invitation to sexual touching. She was released on an undertaking.

Police believe there may be additional victims and urge anyone with information to come forward.