BOSTON (CBS/AP) — A moment of silence, the tolling of church bells and a call for kindness marked the second anniversary of the 2013 Boston Marathon bombings.

On Wednesday at 2:49 p.m., bells tolled as a large crowd of Boston residents gathered at the Boston Marathon finish line and other locations around the city for a moment of silence.

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Bombing survivor Tom Ralston was responsible for tolling the bells inside Old South Church.

Gov. Charlie Baker and Mayor Marty Walsh were among those participating in the solemn ceremonies on what has been declared “One Boston Day.”

City Holds Moment Of Silence For One Boston Day

Earlier Wednesday, Walsh, Baker and other officials unveiled commemorative orange banners bearing a white heart and the word “Boston” on them at the site of the blasts on Boylston Street.

The four banners were mounted on light poles wrapped in blue and yellow flowers, the marathon’s colors.

As bagpipes played “Amazing Grace,” Baker raised a banner in front of Marathon Sports with the help of the family of Krystle Campbell, who died in the attacks.

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Minutes later down the street, Walsh and the family of 8-year-old victim Martin Richard unveiled a banner in front of the old Forum restaurant.

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Jane Richard hugs her mother on the second anniversary of the Boston Marathon bombings. (WBZ-TV)

Jane Richard hugs her mother on the second anniversary of the Boston Marathon bombings. (WBZ-TV)

Later, a moment of silence was held at exactly 2:49 p.m., when the first of two bombs exploded near the finish line on April 15, 2013.

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Walsh has declared April 15 “One Boston Day,” a new tradition in which Bostonians are encouraged to show kindness and generosity.

Related: One Boston Day Events

Three people were killed and more than 260 others were wounded in the attacks.

A detailed view of a memorial on Boylston Street commemorating the two-year anniversary of the 2013 Boston Marathon bombings (Photo credit Tim Bradbury/Getty Images)

A detailed view of a memorial on Boylston Street commemorating the two-year anniversary of the 2013 Boston Marathon bombings (Photo credit Tim Bradbury/Getty Images)

The surviving bomber, Dzhokhar Tsarnaev, has been convicted of 30 counts during his federal trial and could face the death penalty.

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