Police are appealing for public assistance to help locate missing 7-year-old Emily Roper and 4-year-old Tahlee Roper, Victoria Police say.
The girls were last seen with their mother on Sunday 21 May at their Doreen address.
Police believe the children are with their mother Kylie Sutton.
Kylie is known to frequent the Doreen, Barooga and Yarrawonga areas.
They may also be travelling to New South Wales in a blue VW Polo hatchback with registration TXA 201.
Investigators and family have concerns for their welfare and have released an image of the girls in the hope someone recognises them and can provide information on their whereabouts.
Anyone who sights Emily or Tahlee is urged to contact Greensborough Police Station on 8432 0200.
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