Who's to blame? Child Arsonist

In a suburban neighborhood there are many children of all ages.

One fourth grade child (Casey) who has regular signs and small outbursts of aggression, is usually quite and keeps to themself. All the other children have to walk past this childs' house to get from the school bus stop to their own homes. The other children avoid Casey because he's/she's usually odd or "scary".

(Told from one childhood neighbors' perspective) ...One day the other kids notice that Casey is playing in the open garage of his home with the neighbor bullies. They're playing cards and we're told to be happy that the kid finally found some friends, even if us other kids knew those guys were assholes...

Three houses are within view of Caseys' home, adults were present at the time of the occurrence in these houses with their children at around 7pm. The normally calm neighborhood was alerted to Casey and one of the other kids who was also playing cards, yelling at each other in the street. They began pushing each other and at this point all surrounding adults and other children had seen or been watching the fight (Even Caseys own parents). No one stops the fight, letting it fizzle out into words and walking away. No fists were thrown, no weapons drawn.

The next night a neighbors house catches on fire. To sum it up, Casey went to the childs' house that he/she had fought with and set a fire in the kitchen with grill lighter fluid and a bag of newpapers. The backdoor was unlocked and that's how the child entered and left. Again, Casey is in fourth grade and has always been aggressive. The parents never saw any anger management/psychologists/anything to help their child previously. But had someone actually broken up that fight in the street, the fire may not have been started. The case is pending. Casey has been reported in scaring the other neighborhood children more than usual since the incident occurred, but nothing else has changed as of yet.

Who do you think is at fault for this occurrence?