A brother and sister have sparked an urgent plea from police after the pair disappeared from their Sydney home more than 24 hours ago.
Kimberly and Cliff Williams, aged 14 and 12, were last spoken to on Friday evening.
When they could not be located, police were called, sparking an investigation into their whereabouts.
Family and officers hold serious concerns for the pair due to their young age.
Kimberley is about 155cm tall with long, dark brown hair.
Her little brother Cliff is about 155cm tall with short dark brown hair. He was last seen dressed in a green Mario Kart shirt, black shorts and Everlast slides.
He is known to frequent Glebe, Darling Harbour, Circular Quay and Town Hall.
Anyone with information regarding the siblings’ whereabouts is urged to call police or Crime Stoppers on 1800 333 000.