On April 15, 2013, two bombs exploded near the finish line of the Boston Marathon, killing three people and injuring more than 260. On Tuesday, the city of Boston commemorated the event with a brief ceremony on Boylston Street.

There for the event were the family of Martin Richard, who was just 8 years old when he was killed by one of the blasts; Boston's mayor, Martin J. Walsh; Governor Deval Patrick; and Cardinal Sean O'Malley, who read a prayer during the ceremony. Also remembered were the additional victims, Krystle Campbell, 29, of Arlington, Massachusetts, and Lingzi Lu, 23, who was a graduate student at Boston University.

The two men who allegedly set the bombs, brothers Dzhokhar and Tamerlan Tsarnaev, led police on a wild manhunt several days later. That ended with the death of Tamerlan and the capture of Dzhokhar, who is currently awaiting trial. If convicted, he could face the death penalty. The suspects allegedly killed MIT police officer Sean Collier during their attempted escape.

An extended ceremony will be held at the Hynes Convention Center. It will then proceed outdoors, and at 2:49 p.m., the moment the first blast struck, there will be a moment of silence, followed by the tolling of church bells.

Below are some images from the morning's events:

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