NBC晚间新闻 五角大楼收到可疑信件（在线收听）

 Initial field tests on two suspicious-looking envelopes addressed to the Pentagon suggested possible traces of the deadly poison known as ricin. They were stopped at a mail sorting facility separate from the Pentagon building addressed to Defense Secretary James Madison and the Chief of Naval Operations John Richardson.

A similar letter was addressed to the White House but stopped well before it got there. Another was sent to the Houston campaign office of Senator Ted Cruz but tests there for anything hazardous turned up negative. Law enforcement officials say tonight they don't consider any of these letters to be dangerous and they say they are following some promising leads about where the letters may have come from.

工作人员对寄往五角大楼的两个可疑信封进行了初步现场测试，测试表明，信上可能有蓖麻毒素的痕迹。这两封信在五角大楼外的一个邮件分拣处被拦截，这两封信分别写给国防部长詹姆斯·麦迪逊和海军作战部长约翰·理查森。一封类似的信被寄往白宫，但在它到达白宫之前就被拦截了。另一封信被寄往参议员特德克鲁兹(Ted Cruz)在休斯顿的竞选办公室，但那里进行的有害物质测试结果都是阴性的。执法官员今晚表示，他们认为这些信件中没有一封是危险的，并表示正在循着一些可疑的线索，了解这些信件可能来自哪里。