UPDATE 12.30pm: Alexandra was located safe in Darlington just after 12.30pm after a member of the public alerted police.
POLICE are concerned for a missing girl who hasn’t been seen since Sunday night.
Alexandra Walters, who prefers to be called ‘Lexie’, was last seen at her home in High Wycombe.
She is described as having a fair completion, approximately 160cm tall with a slim build and blonde hair.
Alexandra is most likely be wearing a black shirt with white NIKE logo, black knee length shorts with red strip along the sides and a black cap.
She likes areas of nature and has been known to frequent Stratham Quarry, Gooseberry Hill or enjoys walking in the national park in Kalamunda.
Anyone who sees Alexandra or has information regarding her whereabouts is asked to call police immediately on 131 444.