Fire-fighters in Madrid are warning that a skyscraper in the capital is in danger of collapsing after the biggest fire in the city's history.
It is believed that a short circuit caused the fire that blazed all night in the Spanish capital's financial district .
Rescue services evacuated dozens of families, while city residents were advised to keep their windows closed to prevent the thick smoke from entering their apartments.
The fire broke out on the 21st floor of the Windsor Building at around 10.30pm last night.
More than 200 fire-fighters worked all night to quell the blaze.
Apart from seven fire-fighters who were affected by fumes, nobody is known to have been injured.
