By Kyle Anderson
Updated June 10, 2011 at 10:33 PM EDT

Tragedy hit this weekend’s Bonnaroo festival today, as the festival’s organizers confirmed the death of a 32-year-old woman at the Manchester, Tennessee music event’s camp ground.

The cause of death had not yet been determined. The woman—whose name has been withheld pending notification of her family, but has been identified as having lived in the Pittsburgh area—was found by her friends on Thursday night (June 9) at the camping area.

It continues an uncomfortable trend of casualties at music festivals, especially at Bonnaroo. This represents the ninth death in the festival’s ten years, including the 2010 death of a man from Wilmington, North Carolina, who passed away after having a stroke on the grounds.

Drugs tend to come into play with festival-related deaths (21-year-old Ben Muller died of a drug overdose at Coachella in 2008), while others simply seem to stem from pre-existing health conditions (a 39-year-old man passed away at Lollapalooza in 2009 following a heart attack).

However, the heat almost certainly exacerbates these things; the man who passed away at Bonnaroo last year was found to have a core temperature of 108 degrees.

Bonnaroo began on Thursday and will continue through Sunday night, featuring sets from the likes of Eminem, Lil Wayne, Arcade Fire and Mumford & Sons.