I can't remember the exact details of this story or where it happened, but someone got scunted for bashing the life out of this guy that broke into his house. He broke in, got clobbered by the homeowner then he ran off out to the front yard - the homeowner chased him and continued to beat the snot out of him. He pretty much didn't have a leg to stand on because it was obvious that the first "defensive" blow took place in the house, and the fatal blow(s) happened on his front lawn. So essentially if the perpetrator retreats, you can't touch him.
About 6 months ago at a winery in Perth, some old guy shot an intruder - anyone know what ended up happening there?