Wait, I've got a new one (I was playing the complete random map without zones mod by juanjpro so don't wonder about the row of the rooms)
I found 096's lockroom and, just for fun, decided to take a look at it's face. after that I entered the next room and BOOM! Lights cut off, 173 spawned. I went around it and entered the next room (an office room), still walking backwards. That was when 096 started running towards me, but 173 blocked it's way so it couldn't open the door. I went in the next room (still backwards) and heard a horror sound. I went back to the office when I suddenly heard 106's breathing behind me!

So there it was: The moment I never wanted to witness: 173, 106 and 096 all trying to kill me at the same time!

I turned around and saw 106 walking towards me. But since I didn't want to go to the PD, I wanted 096 to kill me, so I opened the door to let it pass, but 173 was still in it's way. CRACK! At least it wasn't 106 who got me.