Investigators are searching for the remains of two news helicopters that crashed in phoenix killing four people. Witnesses say neither aircraft appeared to be in distress before they collided.

• 两架新闻采访直升飞机在凤凰城发生碰撞,四人死亡。调查人员正在寻找死难者的遗体。目击者称:两架飞机出事之前没有任何危险的迹象。