A married couple and their baby girl were killed as a blaze engulfed their house in Thanh Hoa Province, Vietnam on Monday.

The fire broke out at a three-story house on Trieu Quoc Dat Street in Dien Bien Ward, Thanh Hoa City under the province early on Monday morning, the provincial fire prevention and fighting police division confirmed.

Three fire engines, one fire tanker truck, and 25 officers were mobilized to the location.

However, the flames had already engulfed the house, releasing a lot of smoke and posing danger to nearby houses.

Firefighters had some trouble putting out the fire as the house only has one entrance, while its balconies were fenced off by steel frames.

They were able to get the fire under control after about 30 minutes, but three people inside the house were already dead.

The deceased victims include a 22-year-old man, his 22-year-old wife, and their one-year-old daughter.

Their bodies were found on the first and third floors of the house.

Another victim, who has yet to be identified, was injured and brought to Thanh Hoa General Hospital for emergency treatment.

Police are working to determine the cause of the fire.

Preliminary information showed that the family uses the first floor of the house to run a fish tank shop, while their daily activities take place on the second and third floors.

Officers found many flammable objects in the house.

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