At a loss

This is not the post I was going to write today, but I`ve just heard of such a tragedy this afternoon that I just need to write something. Just three words affected several of us where I work, (I`m not going to use names for obvious reasons). The words were "Xxxxx`s Yxxxxxxx`s (name of son) dead". He was a young man, with a young family, it was a tragic accident. Some of her workmates and friends were in tears, I wanted to reach out to them, but I felt so at a loss too, I didn`t know what to say. What does one say in a situation like that? How can one help? And at the same time how can one answer one`s own questions of why was this allowed to happen, let alone answer theirs. I felt so inadequate.