Three men face potential charges after a 21-year-old woman died when rope-jumping instructors allegedly launched her from a bridge without attaching the safety ropes meant to stop her fall, authorities said.

Maria Eduarda Rodrigues de Freitas, a 21-year-old student, died Saturday during a rope-jumping event at an abandoned bridge about 90 miles northwest of São Paulo, Brazil.

Police investigator Andrea Levy told reporters Monday that the three instructors involved in the jump acknowledged that Rodrigues de Freitas was not connected to any safety equipment before she was launched from the bridge.

"They do not remember whether they forgot to attach [the ropes], or who was supposed to do it, or who failed to check. But the fact is the ropes were not attached to her," Levy said.

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The three instructors were arrested following the incident and could face criminal charges, The Associated Press reported.

Brazilian authorities said the three instructors were arrested on suspicion of homicide with "eventual intent," a legal concept under Brazilian law that generally applies when a person is deemed to have accepted the risk that a death could occur. According to Brazilian outlet G1, citing investigators, the instructors were booked on the charge at the scene.

Investigators said Rodrigues de Freitas requested to be launched from the bridge "airplane style," with two instructors lifting her above their shoulders while she stretched out her arms.

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Video shared online appears to show two helmeted men tossing the young woman from the abandoned bridge moments before the fatal fall. The instructors appear to be wearing harnesses connected to safety lines.

Authorities said Rodrigues de Freitas fell approximately 130 feet.

Brazilian media reported that Rodrigues de Freitas had purchased a guided hiking excursion that included the rope jump from the abandoned bridge.

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Rope jumping is an extreme sport that differs from traditional bungee jumping. Instead of elastic cords that create a vertical bounce, rope jumping uses low-stretch climbing ropes designed to transform a fall into a pendulum-like swing.

The City of Limeira identified Rodrigues de Freitas as a resident of Jandira and issued a statement expressing condolences to her family.

"At this moment of pain, the City of Limeira stands in solidarity with the young woman's family, friends and loved ones," municipal officials said in a statement Saturday.

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The city said it would cooperate with authorities investigating the incident.

Rodrigues de Freitas was buried Sunday.

Levy told Brazilian television program "Jornal Nacional" that investigators were examining whether the group conducting the jump was authorized to operate at the site. According to G1, Levy said investigators believe a failure to verify the placement of the safety rope contributed to the fatality.

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In a statement cited by G1, attorneys for the three instructors said their clients had experience conducting the activity and that the incident was the first fatality during their years of operation.

Authorities continue to investigate the circumstances surrounding the apparent safety failure, including who was responsible for ensuring participants were properly secured before jumping.

The Associated Press contributed to this report.

A Sherpa guide whose family had already begun funeral rituals after he vanished on Mount Everest was found alive and crawling toward base camp nearly a week later, surviving alone on the world's highest peak without food, water or supplemental oxygen in what rescuers called "nothing short of a miracle."

Dawa Sherpa, 52, disappeared around May 29 while descending Everest after turning back short of the summit with a Polish climber he was guiding. The client made it safely to base camp, but Dawa had not, triggering fears that he had died on the mountain.

A cleanup crew from the Sagarmatha Pollution Control Committee found him Thursday morning crawling through the treacherous Khumbu Icefall, one of the most dangerous sections of Everest, just above base camp, Pemba Sherpa of 8K Expeditions told The Associated Press.

Rescuers carried him to safety, gave him food and water, and flew him by helicopter to a hospital in Kathmandu, where his wife and daughter were waiting.

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By that point, his family had already lost hope.

His teenage daughter, Mendo Lhamu Sherpa, told the outlet that relatives were in the middle of funeral rites when news of the rescue broke.

"When we first heard about it (the rescue), we could not be sure if that person was indeed our father," she said. "So to be certain we asked for photos to be sent and then only we were sure and very happy."

His wife, Damu Sherpa, added that the family learned he was alive through local news reports and phone calls from friends.

"We first heard that he was still alive on the local news and from a person we know who called with the news that ... he is being brought down," she said.

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Dawa was still wearing his climbing jacket when rescuers found him. His family said he is being treated for frostbite and other complications but is conscious and able to speak.

"He recognized me … is good and speaks," his daughter told Reuters. "We are happy."

The Nepal Mount Everest hiking company called his survival extraordinary.

"Dawa survived alone for nearly a week without food, water, or supplemental oxygen navigating the treacherous Khumbu Icefall (even after the fixed ladders were removed for the season)," the company said in a social media post. "This is nothing short of a miracle."

It was unclear how Dawa became separated from his client during the descent or why there was a delay in launching a search team when he went missing last week. Helicopters were eventually dispatched but failed to locate him.

His rescue came at the end of a record-breaking Everest climbing season. More than 1,000 climbers and guides reached the summit this year after Nepal issued a record 494 permits.

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Officials have said five climbers and guides died on Everest during the season, according to Reuters.

The Associated Press and Reuters contributed to this report.