Police in Brussels tried to close down a right-wing conference while Nigel Farage was speaking, according to reports.
Former Home Secretary Suella Braverman was also at the gathering on Tuesday.
But officers arrived at the venue and appeared to be trying to shut it down.
Police enter venue of Nat Con conference in Brussels to serve a request to close down event. Farage on stage pic.twitter.com/QTAum3O7jI
— Lisa O'Carroll (@lisaocarroll) April 16, 2024
There were chaotic scenes after a local mayor in the Belgian capital called for the conference to be halted.
Emir Kir, the mayor of the Brussels municipality of Saint-Josse, said he refused to tolerate the "far right".
"I have issued a mayoral order to ban the event 'National Conservatism Conference' to guarantee public safety," he tweeted.
"In Etterbeek, in Brussels City and in Saint-Josse, the far right is not welcome."
Organisers were reported to have been given 15 minutes to bring proceedings to a halt.
Reports emerged that police appeared to have decided to stop more people entering the venue rather than evicting the audience.
Hungarian Prime Minister Viktor Orban was due to speak at the event on Wednesday.
Former Prime Minister Liz Truss attended another Hard-Right gathering in Maryland, just outside Washington, in February, the Conservative Political Action Conference.
At the event, she claimed Britain was being run by the “deep state”.
Publishing her memoirs, she has in recent days called for the Supreme Court to be abolished, for the UK to pull out of the European Convention on Human Rights, and for the Bank of England governor Andrew Bailey to be sacked.
She stopped short of ruling out another attempt to be Tory leader, but such an idea was flatly rejected by former Conservative leader Lord Hague.