It is still unclear how the accident in the Bernese Simmental came about. The only certainty is that the man died nine days later in hospital.

According to investigations by the Bern cantonal police, the mountain biker fell several meters down a slope and came to rest on the rails with his bike. This is the description given to the emergency services by passers-by. It is not known how long the man lay there. The driver of the next train, which was riding from Oey im Simmental to Erlenbach, initiated emergency braking and hit the bike, but not the man. At the time, he was lying next to the track in a critical condition.

An ambulance team treated the casualty and Rega then flew him to hospital, still in a critical condition. At the request of Ride, the Bern cantonal police explained that "according to the current state of knowledge, the accident was caused by a medical problem." The mountain biker therefore probably did not fall because of a riding error, but because his health deteriorated to such an extent that he was no longer able to stay on his bike and on the trail. 

The Bernese Oberland public prosecutor's office is investigating the course of the accident and its causes. The Bernese cantonal police are not releasing any further information.