Koil was doing Hignar's quest. After he gave Hignar the book and went outside, a guy named Daric {OSD} showed up looking for it and killed him (Koil then took revenge, but that is irrelevant

I thought at first it may have been because he didn't give Hignar the book, but Koil said he did.
We assume he was an NPC, but Koil found it odd that he had a tag.
Anyone know anything about this?