Police in Surrey have released e-fit images of two men they want to speak to in connection with mobile phone thefts during a music event.
The incidents happened near Epsom Downs Racecourse on Thursday, 8 July where the Epsom Live music event was being held.
Two 17-year-olds were approached by two men between 2305 and 2320 BST.
One asked one of the teenagers to lend him his mobile phone before the other man snatched the other victim's phone.
Both suspects are described as being in their late teens to early 20s.
The first is around 5ft 7in to 5ft 8in tall, with pale skin and short dark hair.
He was wearing a white top with sleeves rolled up to the shoulders, dark shorts which came to just below the knee and black trainers. He spoke with a London street-style accent.
The second suspect is white with tanned skin and with short blond to light brown hair. He was wearing a grey V-neck top with dark trousers and spoke with a southern accent.