WATERTOWN, Massachusetts (Reuters) - Police killed one of two Chechen brothers suspected in the Boston Marathon bombings in a late-night shootout and waves of officers descended on a leafy city suburb in a house-to-house search for the second man.
After a bloody night of shooting and explosions in the streets, details emerged on Friday about the brothers, including their origins in the predominantly Muslim regions of Russia's Caucasus which have experienced two decades of violence since the fall of the Soviet Union.
