Protests in Berlin in front of far-right AfD's headquarters

Berlin police used force to break up a protest taking place inside a bus on Sunday in front of the far-right Alternative for Germany's (AfD) national headquarters.

A very loud siren was heard from the bus, a police spokesman said. Many residents were unsettled and made emergency calls and complaints to the police, the police said in a post on X.

The department said it had established the identity of three people involved in the incident.

The bus is well-known as being part of protest actions by the group Centre for Political Beauty, which reacted with outrage to the police action.

"They just smashed the windows, surrounded the vehicle and arrested our entire team!," the group posted on X.

"This is so blatant - we are speechless. We are at the AfD election party. The fascists continue to celebrate."

The siren is intended as a warning against fascism, the group said.

"Germany will just have to deal with hearing a warning siren for 10 minutes," said a local activist. According to the police, a total of around 80 people took part in the demonstration.

The AfD made historic gains in the German parliamentary election on Sunday, grabbing some 20% of the vote and coming in second place according to exit polls.