The leaked diesel oil drifted some 12km (7.5 miles) from the site of the accident

BBC NEWS

Russian prosecutors have ordered checks at "particularly dangerous installations" built on permafrost after a huge oil spill in the Arctic.

An emergency was declared after 20,000 tonnes of diesel leaked into a river when a tank at a power plant near the city of Norilsk collapsed last Friday.

Read full article here

Emergencies ministry specialists have been flown in from Novosibirsk