8-year-old Martin Richard was near the finish line, waiting to give his father a hug for finishing the Boston Marathon, when he was killed in the explosion. Martin's mother, Denise, was hospitalized with 'grievous injuries,' The Times of London reported. She underwent surgery for an injury to her brain. Martin's 6-year-old sister, lost her leg in the blast, WHDH reported. The status of his father, William, has not been released. The family is from the Dorchester, Massachusetts area.