A Kazakh court has fined a consortium of energy companies leading the work on the Karachaganak gas condensate field for violating environmental laws.

The $210m fine must be paid by the group, led by BG and Eni, for dumping excessive waste dating back to 2008, reports Reuters.

The venture, Karachaganak Petroleum Operating, could not be reached for comment, according to the news agency.

The Kazakh state-owned energy firm KazMunaiGas has reportedly shown an interest in acquiring a stake in Karachaganak, which is the largest upstream project in the central Asian state.