Regional Administration of Civil Defense Agency and Emergency Situations department can not estimate the exact amount of leakage, a size of polluted territory and the content of the liquid. The Federal Service for Supervision of Natural Resource Usage has sampled the liquid and would announce the results later.

By preliminary estimations, about 10 tons of residual oil polluted the Yenisei River. Authorities of Krasnoyarsk started investigation of the accident. Environmentalists claim the accident is the biggest pollution for the recent years, Interfax reported. Inspectors of the Federal Service for Supervision of Natural Resource Usage are searching for the company-polluter.