Belgium’s national Crisis Centre on Saturday raised the threat alert in the Brussels region to Level 4, which indicates a “serious and immediate threat.
![Empty streets in Brussels, the city remains on lockdown Empty streets in Brussels, the city remains on lockdown](https://static.euronews.com/articles/317539/1200x675_317539.jpg)
Video. Empty streets in Brussels, the city remains on lockdown
Belgium’s national Crisis Centre on Saturday raised the threat alert in the Brussels region to Level 4, which indicates a “serious and immediate threat.