Police are urging music fans, who are victims of ticket fraud at Bestival, to contact them as soon as possible.
Officers were alerted before Bestival started on 10 September. A number of people from Brighton reported that they paid for tickets, but had not received them.
The investigation is continuing and, so far, police have confirmed there are more than 250 victims.
Police have set up a web page with an online form.
There is also an e-mail address: firstname.lastname@example.org
More than 150 complaints have been received by police investigating the alleged scamming of festival-goers looking to buy tickets to Bestival.
People complained about being left ticketless after paying to go to the festival on the Isle of Wight earlier this month to see acts including Duran Duran and Missy Elliot.
More than 900 people joined a Facebook page titled "Stresstival", with many posters claiming to have been left out of pocket.
Thousands of music fans have been heading to the Isle of Wight today for the annual Bestival.
While most caught the ferry, some brave festival goers swam there. Headline acts include Duran Duran and Missy Elliott but a local band are hoping this is their chance to shine. Sally Simmonds joined the crowds.
Thousands of music fans, robots included, have arrived on the Isle of Wight for Bestival.
Tom Martin, basking in the sun at Bestival, sent us a picture of the build-up.
Bestival has a Summer of Love theme for this year's festival on the Isle of Wight. The three-day festival will be taking its 50,000 revellers back to the 1960s.
Missy Elliott is to headline at the Summer of Love during Bestival on the Isle of Wight in September.
She is coming to Robin Hill for her first UK show in nine years, and will be the Sunday night headliner.
The Get Ur Freak On star hails from Portsmouth, Virginia and has five Grammy awards, along with one double platinum and four platinum albums.
Shecan't wait to see all her fans in England.
"We are gonna have a blast together," she said.
Bestival will have a Summer of Love theme for this year's festival on the Isle of Wight.
The three-day festival in September will be taking its 50,000 revellers back to the 1960s.
Tickets for Bestival's Summer of Love go on sale at 10am on Thursday February 12, when they'll be announcing the first wave of acts, including two headliners.