The success of the weekend's Bonnaroo festival in Manchester, Tennessee has been marred by news the event's clean-up crew found a dead body on site on Tuesday.

Reports suggest the 20-something male died of a drug-related issue or from natural causes on Monday.

An autopsy is underway to determine the exact cause of death.

The man was last seen alive on Monday afternoon.

Reunited jam-band Phish, Bruce Springsteen, Beastie Boys, Jimmy Buffett and Elvis Costello were among this year's performers.

The death is the seventh in Bonnaroo's eight-year history.

Image © C. Taylor Crothers

(This news article provided by World Entertainment News Network)