Another thing Thailand needs to address is treating major incidents like this differently because the culprits are under 18 years of age.
The law needs updating, and in crimes such as this, they need to be charged as adults.
Two important areas need looking at, not related to this case, and that is where they are getting off lightly because of their age, or using the old excuse ' My Daddy is a policeman ' when charges will be reduced or buried, depending on Daddy's rank.