I would urge we not speculate on the cause of death. Most likely an autopsy will be performed, and those results are often made public. In addition, SAR units sometimes write up accidents reports assessing the probable causes leading to the accident and make those public. At this point it's a bit early even for trained SAR staff who were onsite to create likely scenarios, much less outside observers. These accident scenarios have a pattern - let's wait for the process to play itself out.