The reason there is only one news article is because its a hoax.
Every couple months or so, a celebrity is falsely rumored dead on the internet. It happened a couple months ago with Bill Nye and before that it was Jeff Goldblum, etc.
The link you gave even says "What follows is not a real news article; nothing (that we know) happened to him."
Jean Reno IS awesome though. See
Leon: The Professional. It is required viewing for anyone with a pulse.