A North Bay man has been charged with drugging, sexually assaulting and secretly recording two women in separate incidents in an apartment near Bronson Avenue and Nepean Street, Ottawa police said in a news release Monday afternoon.

Police said the two sexual assaults happened over the past three years and they are concerned there could be more victims.

A 41-year-old man is expected to appear in court Tuesday to face two charges of sexual assault, two charges of administering a noxious substance and two charges of secretly recording a person for a sexual purpose.

Police said no further details would be released to protect the identities of the victims in this case.

Anyone with information is asked to contact the Ottawa Police Service Sexual Assault and Child Abuse Unit at 613-236-1222, ext. 5944 or Crime Stoppers at 1-800-222-8477.