Tennessee's Bonnaroo Music & Arts Festival has been marred by the death of a female concertgoer, who was found dead outside her tent on Thursday.
The 32-year-old woman's body was discovered on the grounds in Manchester on the first night of the annual four-day event. Her name has been withheld until her family is notified.
Officials say her death may have been caused by heat, drugs or a combination of both factors.
The Nashville medical examiner is conducting an autopsy to determine the cause of death, according to Reuters.
Fans at the event - which includes a line-up of Eminem, Robert Plant and a reunited Buffalo Springfield with Neil Young and Stephen Stills - have been enduring soaring temperatures to watch their favorite acts.