Is he killing the cop in self defense...an accident? You said "kill" not "murder", but your options make it seem like you meant "murder".... so it's a little confusing.
This 13 year is murdering the cop in self defense for what a cop did to him on the weekend. Some town cop was out on the streets and suddenly talks over with this 13 year with why the kid was walking on the streets at 11:30 at night in his small city. Then the 13 year old talks trash and the cop suddenly goes Rodney King on the kid. This marks the revenge for the 13 year old. On that Monday, two days later after the cop brutality treatment of the 13 year old, the 13 year old swiftly stabs a cop right in the stomach four minutes before school started. The cop dies afterwards and the 13 year old is arrested for assaulted murder of a police officer.
He would get about 5 to 10 years in Austria.
He wouldn't get any criminal punishment in Germany. Strafmündigkeit begins at age 14.
Ah, yeah. He's only 13, so no punishment for him in Austria too.
Just checked it, 14 years for
Strafmündigkeit here as well.