Is collapsing the facade of a house in the old town of Alcala de Henares

An explosion Friday caused the collapse of the facade of a house in the old town of Alcala de Henares (Madrid), according to sources 112 Emergency . At the moment it is unknown whether there were casualties.

incident, which took place around 1950 hours at number 30 of the Calle Mayor, produced a noise that was heard throughout much of the municipality. "It's rumbling across the street," said one witness, as reported by Juanjo Becerra.

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Scene of the incident came four units of firefighters and six ambulances.