Police are investigating reports of an alleged gang rape at a nudist club near Dartford.
The incident is said to have happened at Eureka Sun Club in Manor Lane, Fawkham on Saturday, June 17.
Police said that at around 2.30am the victim had been talking to a number of men who were inside a vehicle before she returned to the caravan where she had been staying.
A spokesman for Kent Police said: “Between four to five men are reported to have then entered the caravan and subjected her to a sustained assault.
“The suspects are reported to have also stolen two mobile phones belonging to the victim.
“Detectives are continuing work to establish the circumstances of the incident, and no arrests have yet been made.”
Police want to speak to a man who is not being linked to the incident but is believed to have spent some time with the victim hours before it took place.
The incident is being treated as isolated.
A spokesman for Kent Police said: “Anyone who may have information, but has not yet spoken to police is asked to call 01622 604100, quoting reference YY/016153/17.”
Alternatively call Kent Crimestoppers, anonymously, on 0800 555111.