CHICAGO (CBS)– One person died and three people, including a Chicago Firefighter, are in critical condition after a fire in Belmont Central.

The fire is believed to have started in the basement of an apartment building, located at 3138 N. Marmora Ave.

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Officials have not identified the person who died.

The Chicago Fire Department confirmed the firefighter in critical condition at Loyola Medical Center. CFD said the firefighter had just celebrated his 1-year anniversary on the job.

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The fire was put out by 2:30 a.m. The cause of the fire is unknown at this time.

A brother and sister who live on the first floor of the apartment building heard their dog barking and realized the building was on fire. They saw a burst of flames and evacuated.

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CFD will pass out smoke alarms in the area Thursday morning.

CBS 2 Chicago Staff