Police are appealing for witnesses after an 18-year-old was attacked while walking home through the tunnel under Brighton Racecourse towards Whitehawk at around 11.30pm on Sunday, January 19.
He was surrounded by a group of boys and girls who punched and kicked him and struck him with a crowbar before taking his orange T-Mobile Sydney mobile phone and Skullcandy blue headphones with a Gold skull motif on the ear.
The victim suffered cuts and bruises to the face and a swollen mouth and eye, and had to go to Royal Sussex County Hospital for treatment.
Two boys aged 13 and 14 from Brighton, a 16-year-old boy from Worthing and a 14-year-old girl from Surrey were arrested on suspicion of robbery and questioned before being released on bail while officers carry out further inquiries.
Detective Constable Paul Candy said: “This was a nasty attack by a group of youths against a lone victim and I need anyone who witnessed it or who knows anything about it to make contact as soon as possible.
“If you saw or heard anything or know anyone that has heard something about what happened, please get in touch with us.”
Anyone with information should call 101 quoting serial 1440 of 19/1, email [email protected] or call the independent charity Crimestoppers anonymously on 0800 555111.