An unconscious man and the body of a woman were found during a fire extinguishing operation in a second-floor apartment on Akademias Street in central Athens.
The fire brigade was called at about 02:30 on Tuesday morning and 15 firefighters with four vehicles and a special air ambulance arrived at the scene.
While extinguishing the fire the firefighters found unconscious initially a man and shortly afterwards the body of a woman.
According to ERT, these were elderly people who were living under miserable conditions as even rubble was found in the apartment.
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The fire was quickly brought under control and did not spread to adjacent apartments.
A preliminary investigation is underway into the causes of the fire.