Norway’s military said on Monday it had deployed troops to help guard major onshore oil and gas porcessing plants, a week after leaks in the Nord Stream pipelines, suspected to be caused by sabotage. Leaks were detected on Nord Stream 1 and 2 pipelines on Sep. 26 off the coast of Denmark and Sweden. Both countries said leaks were caused by explosions  and several countries have launched investigation.

 Norway has become Europe’s largest gas supplier after Russia cut off most of its supplies to Europe in retaliation for sanctions. The Scandinavian country already deployed its navy and air force last week to patrol offshore oil fields. The Norwegian government also announced it would receive assistance from Britain, Germany and France.

At the request of Norwegian police, the Norwegian Home Guard, a rapid mobilization force, on Monday began to deploy troops at plants responsible for processing and exporting oil and gas.

Norwegian government said in the aftermath of Nord Stream leaks that there was no specific threats to its oil and gas infrastructure. It still found it necessary to ramp up security to ease concerns among workers.

Among the onshore facilities receiving police and military protection on Monday were the Kollsnes and Nyhamna gas export terminals, the Kaarstoe gas and condensate plant and the Mongstad oil refinery.