Authorities said they were running toxicology tests on a 24-year-old woman who died of a possible overdose after being stricken at the Coachella festival.
Results of the tests will be available in about four weeks and coroner's officials will then finalize the autopsy.
The woman, identified as Kimchi Truong of Oakland, died Thursday, four days after possibly suffering a drug or alcohol overdose at the Coachella Valley Music and Arts Festival in Indio, the Riverside County sheriff-coroner said Friday.
In a statement, Coachella promoter Goldenvoice said it was "saddened" to learn of her death.
"We believe this to be an unfortunate but isolated incident," the promoter said. "Our thoughts and condolences are with the family and friends."
Truong was treated Sunday by on-site medical staff and then taken to JFK Memorial Hospital in Indio. She was later transported to Desert Regional Medical Center in Palm Springs, where she remained until she died about 2:30 p.m. Thursday, said Sgt. Curt James of the sheriff-coroner’s office.
James said he believed this was the first death at the annual desert festival.
The office was still investigating, James said.