Gravediggers set to work as victims of a wave of bombings arrive for burial in the Shiite holy city of Najaf, 100 miles south of Baghdad, Iraq on Friday, April 23, 2010. A deadly series of blasts tore through Iraq Friday, killing at least 60 people, in a concerted attack on the country's Shiite community that appeared designed to show the Sunni-led insurgency's defiance despite the deaths of its two top leaders less than a week ago.