I agree with Nullnullatte, have some message like
"You killed pigeon" then "Pigeon is DEAD, R.I.P." or if in a party
"Your party killed pigeon" first. Anyway, some differentation as to
who killed the monster. At least on classic, where Infernal Knight
couldn't use any corpse he didn't kill to increase SELs
there has to be some way to track who killed what. It's bound to have
rolled over here, or if not, there is a handy code example on classic.

--Hair