The alleged sex assaults happened between March and July, during night shifts cleaning a downtown Toronto gym. A 36-year-old woman working for a cleaning company contracted to service a fitness centre in the Front St. W. and University Ave. area claims she was assaulted and sexually assaulted “on multiple occasions” by her boss — the owner of the unnamed cleaning company, according to Toronto Police.

Manuel Gomes Franco, 66, of Toronto, was arrested Thursday and charged with six counts of sexual assault and two counts of assault.

Police are concerned there may be other victims.