There is some confusion 'concerning' [='regarding'] his current whereabouts.
news 'concerning' friends
(..) Mr. Ellsworth... ...you'll wear yourselt out. All right. gentlemen. Iet's begin. At the close ot Friday's meeting... ...we were discussing Mr. Harding's problem concerning his wite. Mr. Harding stated that his wite made him uneasy... ...because she drew stares trom men on the street. (..)1975 One Flew Over the Cuckoo's Nest