At least 32 people died, including three firefighters, after an enormous section of roof collapsed at a Latvian supermarket in the country’s capital, emergency medical officials said on Friday.

Pictures from residential buildings overlooking the store showed an enormous crater-like hole in the roof. Building materials were stacked on remaining sections of the roof, where workers were building a garden as part of the Maxima supermarket’s original design plan.

The Fire and Rescue Service said 35 people were injured, 28 of whom were hospitalised, including 10 firefighters. The service could not say how many people might be trapped under the rubble.

Several large construction cranes hauled debris from the hole, where firefighters slowly sifted looking for survivors.

Rescue workers periodically turned off all equipment and asked relatives of missing people to call so that they can pinpoint ringing phones, rescue service spokeswoman Viktorija Sembele said.

She said work was proceeding slowly since both the rubble and remaining sections of roof were like a house of cards and could easily collapse further if a wrong piece is moved or lifted.

Firefighters suffered casualties when large sections of roof fell on them right after their arrival on the scene.

The rescue service estimated that approximately 5,300 square feet of roof collapsed, destroying large sections of the store’s high walls and nearly all its front windows.

Maxima officials refused to comment and said that they would release a statement later.

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