I am a somewhat new player with a small group(most of which have given up the game) and this is our first experience being stolen from

. The perpetrator must be a more-advanced character since he bashed down a few palisade walls without a battering ram. Anyways, we were able to successfully gain a couple scents of theft, vandalism, and trespassing. Apparently the thief has no hearth fire, so my friend tried to summon him, and the game says he's already dead. So, being the dumbass that I am, I decided to go after his body. When I track him, I get a full 180degree arrow marker which only gives me a shit-sense of direction of where he is. I've been tracking his body and my stuffies for at least 30mins to an hour and the arrow hasn't changed much at all.
Anyways, the real question I want to ask is, why is he dead?
*Is it a tactic to have an alt come in and steal instead of using a main account so that you can kill it and leave a fake trail? The problem with this is that the one that vandalized the wall should be his main account because of the high STR requirement, right?
Or is it more likely that he just died of another retarded cause?
*Should I even be tracking him, since I'm a newer player and would likely get my ass kicked when fighting another player?
I'm just really new to this experience and don't know how to deal with it very well, so any advice would really be appreciated.