In response to Crysis and that other guy, i don't remember his name, the significance of their deaths is that the Illuminati (assuming they exist here, bear with me) place a great importance on numbers.
Also assuming they exist, they are satanic, which is an opposition of christianity, which also places importance on numbers (if you don't know that pick up a bible, you'll find out, the holy trinity etc.) in regards to the holy trinity, trinity = 3, you know that of course, so naturally the satanic religion puts impotance on 3 as well, because it is kind of like a "Fuck you" to Christianity, and in turn, god.
And if you know these two, you could connect the dots that they "sacrificed" if you will (not in the tradational sense, only in the sense that a person died and lots of people saw or knew about it) 3 people on the same day, and it has happened before, generally happening on the 25th of the month.