From BBC News:
A fire alarm has triggered another evacuation of the European Commission in Brussels, just nine days after a blaze damaged part of the building.
This time there was some flooding on the 13th floor, apparently caused by a faulty boiler, firefighters said.
At least four fire engines drew up outside the Berlaymont building, as staff crowded the pavements.
The 2,000 Commission staff had only returned to their desks on Monday. No one was hurt in the 18 May fire.
The latest alert interrupted a news briefing by the President of the European Commission, Jose Manuel Barroso.
The fire on 18 May was confined to a vertical shaft housing cables. It spread up from the basement.