There is some confusion 'concerning' [='regarding'] his current whereabouts.
news 'concerning' friends
(..) Until the sentence is pronounced, poor men can die times. Yes, sir. Who allowed you to give them food, you moron? I'll send you to prison! I want the law concerning prisoner treatement to be applied strictly. Strictly! Strictly! You keep eating, boys. Apostol! (..)1965 Forest of the Hanged