Police are on the look-out for two men who are alleged to have attacked a teenage girl in East Grinstead.
The 16 year-old victim has told officers she was sexually assaulted near Halsford Lane the early hours of Wednesday morning.
She had walked to a petrol station in London Road just after midnight before continuing down an alleyway at Imberhorne Lane.
Police have increased patrols in the area and are asking anyone with information to come forward.