Kiesha Abraham's parents have had their mobile phones seized by police as part of the ongoing investigation into the child's disappearance from her Western Sydney home.
Kiesha's mother Kristi Abrahams and her stepfather Robert Smith were forced to hand over their phones to homicide detectives late last week, The Daily Telegraph reports.
Ms Abrahams and Mr Smith have denied any involvement in the disappearance.
Police would not comment on the significance of the mobile phones, other than to say it was part of the investigation.
It has been seven weeks since six-year-old Kiesha was reported missing from her Mt Druitt home on August 1.
Ms Abrahams is confident of her child's safe return, saying last week that she would get her back alive.