Images: Terror strikes US again; Boston Marathon blasts kill three

 

Boston Marathon Explosions. AP

People react as the first bomb goes off  near the finish line of the 2013 Boston Marathon on Monday, April 15, 2013.  AP Photo/The Boston Globe, David L Ryan

 

Boston Marathon Explosions. AP

Two explosions that occurred during the Boston Marathon left three people dead and more than 140 injured. AP

 

Boston Marathon Explosions. AP

An injured woman is tended to at the finish line of the Boston Marathon, in Boston, Monday, April 15, 2013.  AP Photo/The Boston Globe, John Tlumacki

 

Boston Marathon Explosions. AP

Medical workers aid injured people at the 2013 Boston Marathon following an explosion in Boston, Monday, April 15, 2013.  AP Photo/The Boston Globe, David L Ryan

 

Boston Marathon Explosions. AP

Bill Iffrig, 78, lies on the ground as police officers react to a second explosion at the finish line of the Boston Marathon in Boston, Monday, April 15, 2013. Iffrig, of Lake Stevens, Wash., was running his third Boston Marathon and near the finish line when he was knocked down by one of two bomb blasts. AP Photo/The Boston Globe, John Tlumacki