I really don't think grand theft auto had anything to do with this. We don't know enough about the story to even draw that conclusion. All we know is that he played grand theft auto in the past. Heck, it could have been anything. I bet the reason this story blew up is because the media is desperately trying to link video games to violence for hits since that's a big controversy now. My biggest problem with this story is the fact that these parents left a loaded gun around in their house... That should be the real issue.