DORCHESTER, Mass. - Neighbors in Dorchester, Mass. are mourning the death of 8-year-old Martin Richard, who was killed in the explosions at the Boston Marathon.

Martin was at the finish line when the bombs went off, killing him, and injuring his mother and sister. Neighbors that knew Martin Richard say he was a happy child who loved sports.

Since the attack, police have set up tape to block off access to the Richards' home as they grieve. A memorial is growing at a nearby park.