Swedish climate activist Greta Thunberg has been arrested by Dutch police during a protest in The Hague.
The 21-year-old joined hundreds of protesters in a march against fossil fuel subsidies on Saturday.
The protest led to a tense standoff as dozens of police officers, some on horseback, tried to prevent protesters from blocking the main road.
Ms Thunberg was escorted away by local police on a bus full of protesters.
Protesters had planned to block The Hague's A12 highway for the 37th time Extinction Rebellion organizers said. From 2022, the road will be subject to regular restrictions.
The demonstration was called to protest the Dutch government's tax breaks for companies linked to the fossil fuel industry, including energy company Shell and airline KLM.
Activists hoped to put pressure on the government ahead of a planned debate on fossil fuel subsidies in June.
Organizers of Extinction Rebellion say this is the 37th time they have protested on the A12 highway.
Ms Thunberg was joined by hundreds of protesters in The Hague, some chanting “Stop fuel subsidies now!” and “The planet is dying!”.
A group of activists marched from the city center to a field along the highway, where a wall of local police officers awaited them.
“It is important to demonstrate today because we are living in a planetary emergency,” Ms Thunberg told the AFP news agency.
“We must do everything to avoid that crisis and save human lives.”
Asked if she was concerned about police action, she replied, “Why should I be?”
She was then arrested along with several protesters and driven away in a bus.
According to Reuters, in previous protests in The Hague, police have chased prisoners away from the center of the protests and released them without repercussions.
Greta Thunberg was put on a bus and driven away from the protest with her fellow prisoners.
As of around 14:00 local time (12:00 GMT), traffic continued to flow on the A12, according to the Netherlands' AD newspaper.
The Hague's local police told the BBC: “While we cannot comment on individual cases, all those picked up by the police and loaded into the minibus were officially arrested because they were blocking the highway, which is also against the law.”
Ms Thunberg has been a leading climate campaigner since she was 15 years old.
In February, she and four co-defendants were found not guilty of breaking the law when they refused to follow police instructions during a climate protest in London.
