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Police are appealing for witnesses to a sexual assault at a funfair in Southgate Park, Crawley.
A teenage girl reported being assaulted on the Waltzer ride between 7.55pm and 8.05pm on Friday, 28 July.
Following enquiries, a 17-year-old boy from Crawley was arrested on suspicion of sexual assault.
He has been released on bail, pending further investigation.
Anyone who has any information is urged to report online or call 101, quoting serial 1327 of 30/07.