Police are appealing for public assistance to help locate missing Chelsea teenager Olivia Allen.
The 17-year-old left her Skye Court address on Thursday 25 July.
Olivia was seen at Flinders Street Station about 10.40am on Friday but has not returned home.
Police and family have concerns for her welfare due to her age.
Investigators have provided an image of Olivia in the hope someone may have seen her.
Anyone who sees Olivia is urged to contact Chelsea Police Station on 8773 3200.