Mafia 37. Haven of Evil.

Also, this phrase, "torn to shreds, like a structure," probably indicates that both the structure and the creature were torn apart by the same thing. Overall, it's not a bad outcome, at least because the monster now has only 35% health left, and it will take a long time for it to recover. At least for this night, and probably the next few, it will be inactive. It's a pity there are absolutely no clues.