A Briton who organised a toboggan run that left a London girl clinically dead was the same man who organised a white water rafting event where four people died.
Trevor Hamer was investigated in 1999 when a raft was sucked over a weir. No charges were brought.
He is under scrutiny again, after the death of 15-year-old Nasreen Jamalzadeh, in Austria.
Her body is being kept alive on a life support machine in the Salzburg Neurological Clinic - but doctors say the teenager is clinically dead.
Nasreen's father, Ali Jamalzadeh, said: "My wife and two children have gone out there. I haven't spoken to the school and I don't know what is happening."
But he added: "Why wasn't she wearing a helmet?"
A second girl who was on the same toboggan received injuries to her left arm. The two girls were part of an 80-member group from London's Urusline High School.
After the second tragedy involving his Taxenbach Club, Mr Hamer said: "We are all devastated. I had trained safety advisors give all the people on the toboggan run full instructions before they set off. You can't do any more than that."
Nasreen suffered severe head injuries when she and the other girl lost control of their sled and crashed at Fusch on Monday night.