Norwegian coast guards stopped Greenpeace from protesting at a site of the country's northernmost exploration well drilled by Statoil, the environmentalist group said on Aug. 17.

A number of activists entered a 500 meters safety perimeter around Songa Enabler rig with rubber boats and kayaks on Aug. 17, seeking to stop the drilling of the Korpfjell well, situated more than 400 kilometers from the mainland.

Statoil said entering the safety zone was "illegal and irresponsible," and it called the police to intervene. The coast guard reacted to the call shortly.

"The Arctic Sunrise is currently being towed away from the drilling site, to the mainland in Tromsoe, Northern Norway," Greenpeace said in a statement late on Aug.17. There were 35 activists and crew members on board, Greepeace added.

Norwegian police said Greenpeace activists were ordered to leave as they were disturbing the oil drilling, in violation of Norwegian interests, according to the Petroleum Act.

When the activists refused to leave voluntarily, the coast guard were called in to remove them, Norwegian police added.

Greenpeace said it had the right to protest peacefully in the international waters against the Arctic drilling, which the group says endangers Arctic birds and is contrary to Norway's commitment to reduce carbon emissions under the Paris Agreement.

Statoil spudded the Korpfjell well last week and expects the drilling to last 25 days to 30 days.