No one knows me here, I'm Matías from Argentina. First of all my condolences for the kid's family and friends.
I just want to add my 2 cents and tell you that we have (unfortunately) already experienced a similar situation in our community a couple of years ago. It is a tough time to endure and a very difficult situation to be handled properly.
Some considerations that I hope to be useful for you.
1) This is a tragedy and the first thing that should be done is give respect and space to the family. This is really important, as anything that may be said or done (even with the best intentions) might be taken wrong by the family.
2) The press handling is difficult. What happened in our community was that reporters and journalist somehow got the personal phone numbers of random traceurs (my guess is that from our very own forum) and contacted them (some of them very young and/or novice) asking questions and stuff and publishing that in the newspaper or TV News programs. In my opinion all traceurs should derive Press to a single group of spokepersons, so they are handled with the proper seriousness and respect
3) Do not rush and try to go out and talk defensively about Parkour. I think that you should wait until the circumstances of the death are determined.
It is somewhat lame that the press in different countries act with same insensitivity, eager to have the exclusive instead of "inform" properly . We had to endure the same accusations about Parkour being a reckless and dangerous discipline, accusations made by people that weren't even aware of what Parkour is all about. But, for some people it is better to sell a piece of news about a "reckless" sport than one of an unfortunate accident

. In the end, the tragedy didn't have anything to do with Parkour, but thanks to the press the damage to our image was done...
Regards
May Kenny Rest In Peace.