The trade-union demonstration on Friday was largely peaceful, but groups of rioters caused serious damage in central Brussels. Vehicles and buses were damaged or set alight, and police used water cannon and tear gas. Prosecutors ordered 21 people, including 17 minors, to be placed under judicial arrest and promised a firm response.

(Staff: Belgium / Justice & Society)

Following the national trade-union demonstration held in Brussels on Friday, 9 October 2026, parts of the city experienced serious unrest. The main march remained largely peaceful, while groups of rioters caused damage in several central areas and clashed with law-enforcement officers.

21 people placed under judicial arrest, including 17 minors

On Saturday, the Brussels Public Prosecutor’s Office announced that 21 people had been placed at the disposal of the judicial authorities following the violence. Seventeen are minors and four are adults. They were due to be questioned during the day. The alleged offences include:

• Intentional arson
• Armed resistance
• Acts of violence
• Vandalism
• Possession of weapons
• Threats

The prosecution has not specified which alleged acts are attributed to each individual.

Three additional magistrates assigned

Given the number of cases and the seriousness of the alleged offences, the Brussels Public Prosecutor’s Office assigned three additional magistrates to handle the files. The measure is intended to help process the cases efficiently and ensure that the facts are investigated.

Damage in the city: buses, vehicles and street furniture affected

Authorities reported damage to or the burning of buses, cars and street furniture. Police used water cannon and tear gas to disperse groups involved in the unrest and restore order.

Prosecutors: freedom of expression must go hand in hand with respect

In an official statement, the Brussels Public Prosecutor’s Office stressed that freedom of expression is fundamental in a state governed by the rule of law, but that respect for others and for public space is equally essential. It said it would respond firmly and systematically to offences committed during Friday’s unrest.

Calls for zero tolerance

Vincent Houssin, a representative of the VSOA police union, called for zero tolerance towards those responsible for disorder. He urged authorities to act more quickly and firmly against people who turn peaceful demonstrations into scenes of violence.

Context: a tense period in the capital

The unrest follows other incidents in recent weeks, including an attack on a police station in Haren in which a police vehicle was set on fire overnight. Brussels has also recently seen student protests against austerity measures affecting French-speaking education in Wallonia.

What happens next?

The 21 individuals were due to be questioned, after which prosecutors will decide on further measures. The investigation is ongoing, and additional arrests have not been ruled out as CCTV footage and witness statements are examined.