Richard was attending the race to see his father, Bill, compete in the race, WHDH reported. His mother and 6-year-old sister remain hospitalized.
Richard's mother, Denise, had surgery Monday night after sustaining a serious brain injury from blast schrapnel. His 6-year-old sister lost a leg. Another sibling was not hurt.
"They are beloved by this community," said Ayanna Pressley, city councilor at large in their home town of Dorchester, Mass., according to the Boston Globe. "It’s surreal, it’s tragic, it’s incomprehensible. Everyone here tonight is trying to comfort one another and be prayerful."
On Tuesday, a candle burned on the stoop of the Richards' home. The word "peace" was written in chalk.
Richard was one of three people killed in the Boston Marathon explosions. About 140 people were injured, including Richard's mother and sister.
Notable deaths of 2014 [PHOTOS]
Soviets call Reagan joke 'dangerous' [ARCHIVE]