Who was that kid?

I've always been puzzled & deeply curious as to WHY a child would've been allowed to roam & wander around the area where a horrific, brutal slaughter of multiple people took place, with one laying in a car only a few feet away. Yes, he was outside the gate, with the hordes of cops, reporters, morgue staff, priests & curious onlookers, but WHY. Who was he? Why was he there? Where were his parents/parent? Was he a neighbor? Was he related to one of the reporters? He was just walking around, like nothing while complete & utter pandemonium was all around him, reporters shouting, cops scratching their heads in confusion, helicopters flying overhead, news conferences being filmed, etc. You see him in still photos, and in news clips. He was walking right by one of the hearses while behind the freaking CORONER, and a priest (Peter Sellers-look-alike) who was probably going to give blessings over the bodies. I would've been scared out of my mind! Any clues to who the kid was?

You can see him starting at 6:20 on this video: