var vtn_player_type = "vp";var ven_video_key="NTY1NjUxfHwxNDcxfHwwfHx8fHx8";var ven_width="660";var ven_height="409";Fear spreads in Cameroon after at least 15 people were killed in the north of the country in two attacks blamed on Boko Haram. Duration: 00:46