A 22-year-old man has been found dead in a tent at the V festival.
Police said security staff at Weston Park, Staffordshire, were called to the tent at about 1am on Sunday where they discovered the man in an unresponsive state. He was given first aid but was later pronounced dead.
He was later named as Timothy Brockhurst, aged 22, from Stoke Heath, near Market Drayton. Police said his death was not being treated as suspicious.
Essex police were investigating the death of a 39-year-old in a house near the festival's second venue in Chelmsford. Ten men were arrested on suspicion of murder.
In Staffordshire, the area where Brockhurst was found was sealed off for forensic examination and detailed statements were taken from his friends.
Chief Inspector Carl Ratcliffe, from Staffordshire police, said: "We are very saddened by the tragic death of this young man and we are working to establish the full facts and build a picture of his actions in the few hours before his death.
"We will be preparing a report for Her Majesty's coroner who has already been informed about this incident and we are working to support those affected by this incident."
A spokesman for the V festival added: "We are all very saddened by this tragic incident, and we want to extend our deepest sympathies to the family of this young man. Our team worked throughout the night to support those affected at the festival site and we want to thank everyone for their co-operation and support during the incident."
Essex police said the ambulance service called officers just after midnight when the 39-year-old man was found in the rear garden of a house in Chelmsford, opposite Hylands Park, the festival venue.
A spokesman said: "Detectives from the Kent and Essex serious crime directorate need to speak to everyone who attended what police believe was a private party at the property during the late hours of Saturday and early hours of this morning."
Anyone with any information is asked to contact Essex police urgently on 101 and leave their contact details.
