Manhunt for supect in Boston Marathon bombings

This locator map shows the location and time line of the suspects in the Boston Marathon explosions. Boston police say one of the two suspects in the Boston Marathon bombing is dead after the killing of an MIT police officer and a shootout with police. A massive manhunt is underway for the other. (AP Photo) <span class=meta>(AP Photo/ MM**NY** JHC**NY**)</span>
April 19, 2013 8:04:32 AM PDT