This story needs an indepth article that explores why the cops couldn't trace him. Was he ever a suspect, was he going so far outside his home area that no one

This story needs an indepth article that explores why the cops couldn't trace him. Was he ever a suspect, was he going so far outside his home area that no one saw him as a suspect. Why didn't his absences from his family connect him? Why did he do it - even for angry people, this kind of acting out and attacks is far far outside normal behavior of course.