article_snippet.sent: Krystle Campbell, 29, Martin Richard, eight, and Lingzi Lu, 23, were killed after the Tsarnaev brothers placed two pressure cooker bombs, hidden in backpacks, at the marathon finish line.
article_snippet.sent: Explosion: Krystle Campbell, 29, Martin Richard, eight, and Lingzi Lu, 23, were killed after the Tsarnaev brothers placed two pressure cooker bombs, hidden in backpacks, at the marathon finish line (pictured)
article_snippet.sent: Chilling: Little Martin, who was killed in the bombings, is seen (front circle) just meters away from Dzhokhar Tsarnaev (back circle) on April 15.
article_snippet.sent: Victims: Martin (left) was cheering on runners with Martin (left) family.
article_snippet.sent: Right, Lingzi Lu (right) also died in the bombings .