How did he end up here

I was driving around pacifica, saw an explosion on that overpass, killed the animals fighting on there but then I also found Paco hanging there with the iconic smart sniper "yasha" on the floor near him.

I haven't started the Phantom Liberty DLC yet.

this might have happened because of one of my mods (i got the "Welcome To Night City" mods collection and no extra mod) but if so which one?