I looted a crossbow etc from the police station in electro, made my way to the fire station with 4 maybe 5 zombies on me, I only had a baseball bat so I ran right to the top floor and bandaged my self. i instantly went down with a fracture and loads of bleeding messages then i died after been hit 3-4 times together.
Only possibly cause was either zombies hitting me through the floor or a invisible player with a melee as no shots where fired.