At this stage the death is being treated as unexplained and police are keen to speak to anyone else at the V Festival who may have information or may have seen the male during the evening.
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Rescue workers are at the site Sunday morning trying to cut open mangled coaches.
Despite chilly temperatures it will be a mostly dry day, and milder than yesterday.
The Sunday Times alleges a missile malfunctioned after launch during a routine test of the UK's nuclear deterrent last year.