Crews responded after a triple-decker home in Roslindale caught fire Thursday, according to fire officials.

Boston Fire Chief Paul Burke told 7NEWS the blaze at the home on Washington Street started on a back porch, raced up the back of the building, and onto the roof. Cellphone video taken by a bystander captured massive, orange flames spreading through all three floors of the building.

Firefighters initially thought no one was home, but when they checked inside they found a woman sleeping in her bedroom on the second floor. The woman’s son told 7NEWS they most likely saved her life.

“I guess she was sleeping and they were knocking on the door really, really hard to wake her up, and they did which was really, really good because the fire was at the back of the apartment and if it would

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