AKIPRESS.COM - Kazakh oil flowing via Russia to be loaded on tankers at the Baltic Sea port of Ust-Luga has been contaminated and Kazakhstan plans to seek compensation from Russian pipeline monopoly Transneft, a senior Kazakh energy official told Reuters.

Six tankers with 598,000 tonnes of tainted oil were loaded at Ust-Luga, Deputy Energy and Mineral Resources Minister Aset Magaulov said.

"First, companies that sold the oil will talk to buyers about a discount, then ... (Kazakh pipeline operator) Kaztransoil will have separate talks with Transneft," Magaulov said.

Russia's oil export flows have been disrupted since April when high levels of organic chloride were found in crude pumped via the Druzhba pipeline to the Baltic port of Ust-Luga and other European countries.