Turkish sources say they have documentary evidence that a Saudi security team killed him. Here's our security correspondent Frank Gardner.

土耳其消息人士称他们有书面证据表明，一个沙特安全小组杀害了他，以下是我台安全通讯员弗兰克·加德纳的报道。

The Texas Department of Public Safety director says 40 minutes to an hour may have elapsed before a Border Patrol team killed the gunman.

德克萨斯州公共安全部主任表示，大概40分钟到一个小时后，边境巡逻队才击毙了枪手。