Brussels has been plunged into darkness after a massive power cut.
The loss of electricity across the Belgian capital has reportedly sparked terror attack fears, although the cause of the outage has not been confirmed.
Belgium and other European countries are on high alert following several devastating terrorist incidents over the past 12 months.
Brussels is home to a number of key EU bodies, including the European Commission and European Council, both of which are situated in the centre of the city.
The sounds of police sirens can be heard coming from the centre of the city in footage posted online by people tonight.