04/14/2014 03:50 EDT | Updated 06/14/2014 05:59 EDT

Boston marathon bombing: 1 year later

Two pressure-cooker bombs that tore through the crowd at the 2013 Boston Marathon forever linked that storied race with the carnage that followed. Three people were killed and 264 more were wounded as runners streamed towards the finish line.

For five days in April 2013 — from the initial attack to the ensuing manhunt, deadly shootouts and eventual arrest of the surviving suspect Dzhokhar Tsarnaev — Boston was a focus of world attention. For a look back at the events of last year, watch the video in the embedded player.

You can also tune in to The National tonight for a report from CBC's Paul Hunter, who revisits survivors in Boston and speaks with victims of the April 15 attack.

Tomorrow, CBC News will carry live coverage of the memorials to commemorate the bombing.

- 12 p.m. ET - U.S. Vice President Joe Biden, Massachusetts Governor L. Deval Patrick, Boston Mayor Martin J. Walsh, emergency responders, and people wounded in last year's bombing attack at the Boston Marathon will attend a memorial ceremony to mark the first anniversary of the deadly blasts.

- 2:35 p.m. ET - A flag will be raised and a moment of silence will take place at the Boston Marathon finish line. Attendees include Biden, Patrick, Walsh, emergency responders, and people wounded in last year's bombing attacks.

- 2:49 p.m. ET - A moment of silence will be observed for the Boston bombing victims.