NEW : Slain Catholic bishop 's driver captured in stabbing death , Turkish ministry says . `` The tragedy of this event shows the difficulty that the Christian community endures in the Middle East region . '' Apostolic vicar of Anatolia killed . Vatican : Pope Francis has ordered a full investigation into the killing and said he was praying for those who were hurt. U.S. agency : Catholics `` occasionally subjected '' to attacks .
NEW : Slain Catholic bishop 's driver captured in stabbing death , Turkish ministry says . Apostolic vicar of Anatolia killed . Vatican : Pope Francis has ordered a full investigation into the killing and said he was praying for those who were hurt. U.S. agency : Catholics `` occasionally subjected '' to attacks .