Finnish police arrested 30 demonstrators protesting near a nuclear power plant in Finland on Saturday for refusing to follow orders, a police official said.
"Police did not have an option but to detain the whole group for refusing to follow police orders," Lars Groenroos of the Satakunta police told AFP.
"Thirty people were taken to the Rauma police station" and 10 of them were given fines, he said.
The protesters started blocking roads around the Olkiluoto nuclear power plant, in southwestern Finland, early Saturday.
Finnish media reported that by mid-day, around 150 people were demonstrating in the area.
The confrontation with police arose when a group of protesters refused to get off the main road leading to the power plant.
The protesters, some of whom came from Sweden, Germany, France, Russia and Belarus in addition to Finland, were demanding an end to nuclear power in Finland.