CCTV images of a missing teenager have been released by police who are growing increasingly concerned for her welfare.
Billie Dickerson, 15, went missing from Woking, Surrey, on Monday, with the last confirmed sighting of her at about 6.10pm, police said.
A CCTV image of Billie shows her walking through the subway at Woking railway station between Oriental Road and the town centre, at 5.50pm on Monday.
Further CCTV shows her in the Peacocks shopping centre at 6.10pm.
Before that, she was seen at Winston Churchill School in St John's at about 2.30pm, Surrey Police said.
Billie, who has links with London and Hull, was reportedly seen near the school again yesterday and police are carrying out inquiries to confirm the sighting.
A force spokesman said: "Officers are concerned for Billie's welfare and are appealing for any members of the public who may have seen her to contact police."
She is white, 5ft 2in, slim, with long brown hair. She was wearing a blue hooded top over her school uniform of black trousers, blazer and a white shirt at the time she disappeared, but was carrying a bag which may have contained other clothes, according to police
The CCTV images also show her carrying a rucksack.
Anyone who may have seen Billie or has information of her whereabouts should call Surrey Police on 101, quoting reference number 45140001365, or Crimestoppers on 0800 555111.