Police have deployed canine units, marine support and rescue teams in a massive effort to find an Ontario realtor who disappeared in “suspicious” circumstances.

York Regional Police said homicide detectives are leading the investigation into the disappearance of 56-year-old Yuk-Ying (Anita) Mui, who was last seen on Friday.

She was seen at her home around 9:30 a.m. Friday, police previously said, when she left her home near Baycliffe Road and Warden Avenue.