Detectives are appealing for a person who provided information on the whereabouts of missing Melbourne mother Ju "Kelly" Zhang to come forward.
Police say the person called Crime Stoppers anonymously on Friday morning and provided details of the 33-year-old's location.
They are urging that person to call back with any further information or to make contact with detectives.
Ms Zhang, the mother of an eight-year-old boy, has not been seen since leaving her home at Epping in Melbourne's outer north on February 1.
She was wearing a pink nightgown and possibly pink slippers at the time.
A friend reported her missing to police the next day.
Ms Zhang was in a relationship with Doncaster man Joon Seong Tan, 35, who was arrested at Melbourne Airport on February 10 after he allegedly tried to leave the country.
He was charged with murder and will face court again on July 16.
Police have searched Darebin Creek parklands at Ivanhoe West as part of the investigation.