Merseyside Police is becoming increasingly concerned for the whereabouts of 13-year-old Shannane Imogen Turner.
Shannane was last seen at 3.45pm on Saturday, 29 August at her home address on Butts Lane, Southport.
She is described as white, of medium build and 4ft 11in tall. She has mousey shoulder length hair. When she was last seen, she was wearing a black hoodie, black jeans and black trainers.
She has links to Liverpool and St Helens.
Officers would urge Shannane or anyone who has seen her since Saturday, to DM @MerPolCC, call 101 or contact Missing People on 116 000.