Burning Man, the week-long festival that takes place in the middle of the Nevada desert and draws many luminaries from the tech industry, prides itself on building community.

But unfortunately, this year’s festivities, which concluded on Monday, were not without incident. As NBC reports, there have been three separate deaths in less than a week at this year’s Burning Man.

This past Saturday, officials announced that 60-year-old Craig Mann was found dead in his camp, days after Sampson Tshombe, a man in his mid-50s, passed away after experiencing a medical emergency.

Then on Monday, the Washoe County Medical Examiner confirmed that 51-year-old Armando Ramirez died on the way to a hospital in Reno, which is roughly two hours south of the festival grounds in Black Rock City, Nevada.

News of a third death wasn’t far behind.

“Although we average one death a year at the Festival, we have had two so far this year within the confines of the Festival and I have received information regarding a third who died in transit to a hospital in Reno,” said Pershing County sheriff and coroner Jerry Allen in a Monday statement, as quoted by NBC.

The three incidents leave far more questions than answers. Officials have yet to comment on the exact cause of death, but said there are no indications of any foul play. The deaths also don’t appear to be linked in any way.

It’s nonetheless a sobering facet of organizing an often drug-fueled festival in the middle of the desert with giant art installations, the structural safety of which is the responsibility of festivalgoers. According to the Reno Gazette Journal, it’s the most deaths on record for a single Burning Man. Previous incidents involved a man on a motorcycle being fatally struck by a van in 1996, and a woman who was killed after being run over by a trailer in 2003. There have also been reports of suicide and a man running into the Burning Man effigy fire.

According to a survival guide on the festival’s website, the site is a “huge, flat, prehistoric lakebed, composed of a hardpan alkali, ringed by majestic mountains” where “daytime temperatures routinely exceed 100 Fahrenheit, with extremely low humidity.”

“It takes nearly everyone a day or so to adjust to the desert climate,” the website reads. “Don’t be surprised if you spend your first day feeling queasy and cranky. DRINK WATER!”

Officials also warned that taking drugs, including alcohol or caffeine, can increase the risk of dehydration.

In the case of emergencies, experienced festival goers dubbed Black Rock Rangers volunteer to patrol the grounds in pairs.

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