PHILADELPHIA (CBS) — Authorities say three people, including two children, are dead after fire tore through a row home in North Philadelphia early Sunday morning.

The fire broke out just after 4:30 a.m. near 6th Street and Montgomery Avenue.

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Firefighters arrived to find the home engulfed in flames. Crews brought the blaze under control in less than an hour.

Fire officials confirmed that a child who was rescued from the burning home died at Hahnemann Hospital. A second child and the children’s grandmother were pronounced dead at the scene.

“It’s very sad and it’s tragic,” said Fire Commissioner Adam Thiel. “It hurts for us. It hurts for our entire community.”

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Authorities say two parents who were inside the home at the time of the fire were able to jump to safety.

It is not clear what sparked the blaze.

This deadly fire happened a week after three adults were killed in a house fire in Overbrook.

“We’re really hurting right now” Thiel said. “It’s tough to have this continuing to happen.”

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