Brandi Brooks, 17, left, and her sister Cheyanne, 3, look at a memorial to Boston Marathon bombing victim, 8-year old Martin Richard near the Richard house in the Dorchester neighborhood of Boston, Wednesday, April 17, 2013. (AP Photo/Michael Dwyer)
Gallery: Bombing investigations and memorials
Apr. 17, 2013 @ 02:17 PM
BOSTON -- Investigators combed through the scene of Monday's explosions in Boston the victims were remembered with memorials and vigils.