I categorized it as an environmental issue because I'm just assuming it's the police station, but I have a feeling it may have been a server issue as well (desync).
Is it possible to die if you fall off the edge of the stair case on the roof of the police station? If so then the problem could've been that. I remember running towards the edge (not close enough to fall) and then changing direction to the stairs themselves, but again I didn't get the death message until I was clearly on the second floor and in one of the rooms. Is there a chance the game registered my movement to the original route and ignored the shift in movement.