Board Thread:Skyrim/@comment-100.2.80.90-20151223042028/@comment-6881629-20151223113504

The area reset might remove him after a while, some people have said occasionally those thieves will oddly spawn protected or essential (guards very quickly kill them in my game though). If those thieves have appeared aren't you a member of the guild i don't think your meant to help stop them (but it is up to you of course).