Norway police investigate break-in, oil leak at disused transformer station

Norwegian police said on Monday they are investigating a break-in at a disused electricity transformer station near Oslo where an oil spill was discovered on Sunday.

National power grid operator Statnett said that some 50 to 60 tonnes of oil had leaked from a transformer and that this was believed to be caused by an act of sabotage.

Police in an emailed statement said they had launched an investigation into the break-in, while adding that it did not so far have concrete evidence that the oil spill was the result of sabotage.

"The police are at the very beginning of the investigation, and are now working to gather information about the break-in and the circumstances surrounding the leak," they said.