Hundreds of music fans have been turned away from a festival after finding their tickets were fakes.
Live Nation, promoters of this weekend's Barclaycard Wireless Festival, said many of those who had purchased tickets from third party websites such as Gumtree and eBay have been refused entry as their tickets are counterfeit.
The three-day event at Hyde Park has seen 65,000 revellers enjoy performances by acts including Nicki Minaj and Professor Green, while Rihanna headlines on Sunday.
Live Nation said the fraudulent tickets had been created by parties preying on music fans who did not use official ticket outlets.
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"All it takes is for somebody to see me - and I could just die, just like that. I could want to go to the shop and not come home."
Before the killing, Peters searched the internet for "serial killers", "treatment of child killers in prison" and "premeditated murder".
Arriva Rail North, Greater Anglia and South Western Railway are all affected.