'Friendly fire' downed Saudi helicopter in Yemen: sources

A Saudi military helicopter that crashed in Yemen killing 12 Saudi soldiers was likely hit by "friendly fire", military sources said Wednesday.The soldiers, including four officers, died Tuesday when the helicopter went down in Yemen's Marib province, the Saudi-led Arab coalition fighting Iran-backed Huthi rebels said in a statement."As the Saudi helicopter was not identified by the ground operations centre, the air defence system was triggered automatically," a senior Yemeni military official s