Russian emergency officials say clean-up operations are under way after an oil tanker was grounded, damaging one of its fuel tanks.

The tanker Nadezhda hit a reef during a storm on November 28 near the port city of Nevelsk on Sakhalin Island in Russia's Far East. It was carrying 786 tons of fuel oil and diesel fuel.

The Emergency Services Ministry said operations were taking place to collect spilled oil and also contaminated soil from along the shore.

Oil remaining on the damaged tanker was being pumped into other vessels.

Sakhalin Island, located in the Pacific Ocean just north of Japan, is a major producer of oil and natural gas.

Based on reporting by Interfax and AP