Red !! 100%

[Sarick]

Did you steal the mob from someone else who claimed it first then disengaged to make it go yellow?

There was a Japanese player that would grab NM's and attack the other mobs while they had hate from a NM so people would attempt to grab the NM. Problem was unless the player who claimed first died/zoned they'd still get the KI.

A LS I was in claimed tunga from a player who said it wasn't claimed. She appeared to be doing AOE chest farming. After we killed it the player said thank you for KI and left. She basically used us to kill it for the KI.