Belgian riot police fired water cannon on Sunday to disperse far-right football hooligans who disrupted mourners at a shrine for victims of the Brussels attacks, as police arrested several suspects in a series of new raids.
In scenes that compounded a week of grief for Belgians, black-clad protesters shouting anti-immigrant slogans moved in on the makeshift memorial at Place de la Bourse where hundreds of people had gathered in a show of solidarity.
Under-fire Belgian authorities meanwhile detained four terror suspects after carrying out 13 raids as they seek to round up a web of militants with links to the carnage in the Belgian capital and to attacks and plots across the border in France.
The clashes between the far-right demonstrators and police underscored the tensions in Belgium after DAESH carried out suicide attacks on the airport and the metro system on Tuesday in which 28 people died and 340 were wounded.
"This is our home" and "The state, DAESH accomplice" around 200 hooligans chanted,as they gathered near the square by the stock exchange building, which has been covered in flowers, candles and messages by mourners.
Police urged the mourners, who included some Muslims, not to provoke the hooligans, but some joined in chanting "Fascists! Fascists! We're not having it!"
Riot police with helmets and shields corralled the hooligans before dispersing them with high power water jets, and marshalling them onto trains out of the city.
Around ten people were arrested said police.
Brussels mayor Yvan Mayeur said police had done "nothing" to stop the hooligans coming to Brussels despite having advance warning, adding that he was "appalled" that "such thugs have come to provoke residents at the site of their memorial."
Belgian Prime Minister Charles Michel said he "emphatically" condemned the demonstration.
The mourners gathered despite the fact that organisers had earlier called off a "March Against Fear" in Brussels on Sunday at the request of Belgian authorities, who said police needed the resources for the attacks investigation.