4月18日，在美国波士顿举行的新闻发布会上，警方公布波士顿爆炸案两名嫌犯图像。[新华社 张军 摄]
Photos released by the U.S. Federal Bureau of Investigation (FBI) in Boston on April 18, 2013 show two Boston bombing suspects. The FBI special agent Richard DesLauriers on Thursday released the photos and video of two suspects of Monday's deadly bombings in Boston, asking for the public's help to identify them. [Zhang Jun/Xinhua]