was shot and killed during the manhunt for the suspects days later, and Boston police officer Dennis Simmonds, 28, died after a year from injuries sustained in a shootout with the bombers.

Martin Richard, 8, Krystle Campbell, 29, and Lu Lingzi, 23, were killed in the twin bombings at the finish line of the 2013 Boston Marathon. They were all spectators, like thousands of others, at the ...

was shot and killed during the manhunt for the suspects days later, and Boston police officer Dennis Simmonds, 28, died after a year from injuries sustained in a shootout with the bombers.

These events range from the assassination of Abraham Lincoln to the Boston Marathon ... were identified as suspects. The brothers engaged police in a dramatic chase and shootout that left Tamerlan ...

1,514 people died The Oklahoma City bombing killed 168 ... Tsarnaev were identified as suspects. The brothers engaged police in a dramatic chase and shootout that left Tamerlan Tsarnaev and ...

The Oklahoma City bombing ... Boston Marathon on April 15, 2013, killing three people and injuring more than 250. Two brothers, Dzhokhar Tsarnaev and Tamerlan Tsarnaev were identified as suspects.

was shot and killed during the manhunt for the suspects days later, and Boston police Officer Dennis Simmonds, 28, died after a year from injuries sustained in a shootout with the bombers.

The suspects in the twin bombings that killed three people and wounded ... Meanwhile, surgeons at a Cambridge hospital said the Boston transit police officer wounded in a shootout with the suspects ...