警方：波士顿爆炸案一嫌疑人已丧生另一名在逃

Police in Massachusetts are conducting a massive manhunt for one of the suspects in Monday\'s Boston Marathon bombings, after killing the other suspect in a shootout late Thursday.  US media are reporting the suspects are brothers of Chechen origin.

Authorities say the "white hat" suspect from the marathon bombings, known as Suspect Two, is on the loose and is "armed and dangerous."  Police are searching through the suburb of Watertown, about eight kilometers from Boston, and other parts of the Boston metropolitan area.

The Boston region is in lockdown.  Residents have been urged to stay in their homes with the doors locked, public transit service has been suspended and all schools and universities are closed.  Officials have shut down airspace over Boston.

Massachusetts Governor Deval Patrick said the situation is "serious," and he asked the public to also take it seriously as well.

Boston police have identified the suspect at large as 19-year-old Dzhokhar Tsarnaev of Cambridge, Massachusetts, a town outside of Boston.  The deceased suspect is believed to be 26-year-old brother Tamerlan Tsarnaev. 

U.S. media say the suspects\' family is from a Russian region near Chechnya, which has been plagued by an Islamic insurgency stemming from separatist wars.  The brothers were believed to be living legally in the United States.

有关当局说，被列为马拉松爆炸案二号嫌疑人的“白帽”嫌疑人仍然在逃，身上携带武器，具有危险性。警方正在波士顿以西8公里的沃特敦和波士顿其它一些地方搜索。

波士顿地区已经被封锁。居民被告知最好待在家里，把门锁好。波士顿地区公共交通停止运行，所有中小学和大学关闭，官方禁止飞机在波士顿上空飞行。

麻萨诸塞州长帕特里克说，形势严峻，他呼吁公众应该认真对待。

波士顿警方确认，在逃的嫌疑人是麻萨诸塞州波士顿市外剑桥镇的19岁居民焦赫哈尔察尔尼。被打死的嫌疑人是他26岁的哥哥塔梅里安察尔尼。

美国媒体报道，他们是来自俄罗斯车臣共和国附近地区的移民。车臣的穆斯林武装一直为脱离俄罗斯而战。据信这兄弟两人具有在美国合法居住的身份。