By CBS 2 Chicago Staff

CHICAGO (CBS) — Investigators late Tuesday were trying to determine the cause of a fire that left a woman dead in Albany Park.

The fire broke out in a building in the 4400 block of North Lawndale Avenue. An anonymous person called 911 reporting smoke from a third-floor window, police said.

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Firefighters 44-year-old woman unresponsive in her bed when they arrived at 9:35 a.m. She was pronounced dead at the scene.

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A dog and cat were also killed.

The smoke alarms were working at the time.

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CBS 2 Chicago Staff