Just some notes to our overseas members who would not be aware of Australian things. I live just outside Sydney.
Firstly, because the child is under 18, we may never learn his identity due to child protection laws here and
may never even find out family members involved. If the victim is unrelated, his name may be released if it does not identify the child.
The crime will be considered premeditated with intent, since he went from Ryde to Chatswood armed with a deadly weapon. Ryde is not far from Chatswood by the map, but takes a bit of effort to get there. The areas involved can get quite congested. So, plenty of time to reconsider and to dispose of the weapon.
Carrying anything that could be used as a weapon is frowned upon by the law here and heavy penalties can apply. If you have a baseball bat or a tyre iron in the car for protection and the police think this is your intent, expect to be charged. No public are permitted weapons for personal protection from other people over here. If you are at risk of being hurt by, say, an intruder then you can reasonably pick up something handy to defend yourself. If you are in the kitchen and pick up a knife to fend the attacker off, then that is considered a reasonable defence. If you kill him and he was unarmed, then you are in trouble under the use of reasonable force law. You are only really allowed to use a matching or slightly higher level of force your attacker is using. It tends to become a pretty grey area in courts.
We have had a number of cases here where the person defending themselves has ended up killing the aggressor. It isn't pretty for the defendant as the cases often drag out for a long time (sometimes years) and the legal costs are astronomical. Guilty or not, life often gets pretty hard then.
[bcolor=transparent]If the media refer to the boy as a Chinese National (if they got that fact right), it is likely he is not a citizen, but over here from China with his family on some sort of a Visa. So if found guilty (likely), probably serve some sentence (this is a big unknown factor, our courts do some pretty crazy things) and deportation afterwards. Any foreign national here automatically faces deportation if they serve 12 months or more prison time. This includes those who were born here if they have not been naturalized.[/bcolor]
Metal detectors are mainly only used here in airports, courthouses and major official buildings considered to be at risk. They are not in common use or in schools, etc.
Besides that, all factors leading to the incident
[bcolor=transparent]will be considered [/bcolor]in court. Being a child (legally), he will not be tried in a open court, or by jury, but will be tried in the children's court by a judge with lawyers present. The hearing will likely be in closed sessions with heavy media restrictions imposed.
I would urge everyone here to be a little wary of our media here. Like a lot of other countries around the world, they do not always get their facts straight and at times try not to let the facts get in the way of a good story. Especially our current affairs shows, where they usually have an agenda and choose who is going to be the victim/offender and will tweak the story to fit. Advertisers often wield much power over the media controlling what gets said about their companies and products. But that is true of any Western country.
I can still remember the Azaria Chamberlain ("The dingo took my baby!") case in the early 80's here. The media and police conduct was absolutely disgraceful. There are stories of political involvement too. It made me realise neither could be trusted to be impartial and do their jobs properly. It was really trial by media and police incompetence. She served some years in prison and has since been exonerated.
I have personally seen some stories I have had personal knowledge of over the years that the media got involved in where they presented an incomplete or misleading story to the public.
Anyway, I digress.
I certainly think this is all a tragedy for everyone involved and for all the families involved. There is not going to be a happy outcome for anyone here.