NEW YORK (CBSNewYork) – A memorial mass was held Saturday to mark the 10th anniversary of what’s known as “Black Sunday.”

Friends, family and colleagues gathered in the Bronx to remember three firefighters who died in two separate fires on Jan. 23, 2005.

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Firefighter John Bellew and Lt. Curtis Meyran jumped four stories to their deaths while fighting a fire in a Bronx building.

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Another firefighter, Richard Sclafani, died in a separate fire in Brooklyn that day.

“It’s a day which demonstrates a grateful city, that the FDNY will not be deterred, we will not stop and we will give everything in the pursuit of our life-saving mission,” Fire Commissioner Daniel Nigro said.

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Nearly seven years after he was severely injured in the Bronx fire on Black Sunday, firefighter Joseph DiBernardo died.