Brooke Wilkinson, 17, was last seen five days ago, according to Essex Police.
“We are very concerned for her welfare and are asking the public to help us find her,” a police spokesperson added.
The teenager, from Brentwood, is described as wearing glasses and having brown hair. She also has links to Chelmsford.
CCTV images of Brooke Wilkinson released by Essex Police (Image: Essex Police)
Police have released CCTV images of the 17-year-old wearing light grey checked bottoms and a grey t-shirt.
She can also be seen carrying a black rucksack over her shoulder, with her long hair held up by a large clip.
According to Essex Police, the teenager could now be wearing black leggings and a white top.
The police have asked anyone with any information regarding Brooke’s whereabouts to get in touch immediately by calling 999 and quoting incident reference 613 of 5 August.