Swiss Authorities Close Criminal Investigation Into Death of Champion Scottish Wingsuit Flyer Liam Byrne

Swiss federal prosecutors have confirmed that they will not pursue any criminal proceedings in connection with the death of a Scottish wingsuit flyer who was killed during a jump in the Alps last year. The decision brings an end to a lengthy investigative process that examined whether any criminal responsibility could be established for the fatal accident.

Liam Byrne, a 24-year-old British champion in the sport, died after crashing on the Gitschen mountain in Switzerland. He had launched from an altitude of approximately 2,400 metres (7,874 feet) before the incident occurred. The accident took place in June of last year and prompted an immediate investigation by Swiss authorities.

Documents obtained by BBC Scotland News from the Swiss Federal Prosecutor's Office reveal that officials have formally decided to discontinue the case. The paperwork outlines the reasoning behind the decision, concluding that there is no basis for criminal charges against any party.

According to the prosecutor's report, the group Byrne was flying with included several other wingsuit pilots. The first two jumpers in the party landed without any problems. However, Byrne's flight ended in tragedy when he collided with the mountainside, sustaining injuries that proved fatal.

The report states that proceedings would be halted if investigators found insufficient evidence of criminal suspicion, including any suggestion that someone knowingly placed life in danger. This standard appears to have been met, with officials finding no grounds to proceed further.

In its assessment, the prosecutor's office described the fatal crash as being attributable, with a high degree of probability, to a situation from which there was no escape. The report explains that this situation arose from a combination of insufficient lift and the low altitude above the ground, leaving the flyer with no viable options to avoid the impact.

The document also makes clear that investigators found no indications of criminal acts by third parties that might have contributed to the crash. Furthermore, there was no evidence of any pre-existing technical defect in the equipment Byrne was using at the time of the accident. These findings effectively ruled out both external interference and mechanical failure as causes.

Liam Byrne, who was from Stonehaven in Aberdeenshire, was widely regarded as a highly experienced and accomplished wingsuit flyer. Wingsuit flying is a specialised form of skydiving in which participants wear a suit featuring webbing between the arms, legs, and torso. This design allows the flyer to generate mid-air lift and glide through the air at high speeds before deploying a parachute.

During his career, Byrne completed thousands of jumps. His proficiency and dedication to the sport earned him recognition, including a British championship title. His expertise was such that he became a subject of media interest beyond the niche wingsuit community.

In 2024, Byrne featured prominently in a BBC documentary titled "The Boy Who Can Fly." The programme explored his life and his passion for flight, offering viewers an insight into the mindset of someone who pursued extreme sports with remarkable commitment from a very young age.

In the documentary, Byrne reflected on the origins of his ambition, recalling that he had told his father at around the age of 13 that he wanted to learn to fly like a bird. That childhood aspiration clearly shaped the course of his life and drove him to pursue increasingly challenging forms of aerial adventure.

Byrne's appetite for extreme sports and exploration was evident long before he took up wingsuit flying. At just 12 years old, he climbed Mount Kilimanjaro, Africa's highest peak, which stands at 19,341 feet (5,895 metres). That achievement was followed by a series of other adventurous pursuits, including dog-sledging through the Arctic and scuba diving.

He also undertook multiple high-summit climbs, steadily building a reputation as someone who sought out demanding physical and mental challenges. By the age of 14, he had become a licensed paraglider, adding yet another dimension to his growing portfolio of aerial skills.

At 16, Byrne completed his first skydive. Just two years later, at 18, he was already wearing a wingsuit. He described the suit as a kind of second skin that allowed him to move through the air in a controlled manner, a sentiment that captured his deep connection to the sensation of flight.

Following his death, Byrne's family issued a statement paying tribute to his character and the way he approached life. They said they wished to remember him not only for the manner of his passing but also for how he had lived. They described him as fearless, clarifying that this was not because he lacked fear but because he refused to allow it to hold him back.

The family added that Byrne had chased life in a way most people only dream of and that he had soared. They also emphasised that skydiving and base jumping were more than mere thrills for him, describing them instead as a form of freedom and the environment in which he felt most alive.

The decision to discontinue the Swiss investigation means that no criminal case will be brought in relation to the accident. For the wingsuit community and for Byrne's family, the outcome confirms what the prosecutor's report suggests: that this was a tragic accident rather than the result of negligence or wrongdoing.

Wingsuit flying remains one of the most dangerous disciplines in aviation sports. Participants operate in close proximity to terrain, often at high speeds, and have limited margins for error. The findings in this case, which point to insufficient lift and low altitude as key factors, illustrate the unforgiving physics that flyers must contend with during every jump.

While the investigation has now closed, Byrne's legacy endures through the records he set, the documentary that introduced his story to a wider audience, and the tributes paid by those who knew him. His death has also reignited discussion within the extreme sports community about risk management and the thin line between calculated daring and unavoidable danger.