The bailiffs raid is a new humiliation for the British oil company a day after ExxonMobil signed an agreement that ended BP's hopes of developing Arctic offshore oil fields with Russia, Reuters said.
In January, Russian state-controlled oil company Rosneft and Britain's BP agreed on a $16-billion share swap and Arctic shelf development deal. This was later blocked by a court injunction following legal action by the AAR consortium, which represents BP's partners in the TNK-BP Russian joint venture.
According to Prokhorov's claim, the failed deal infringed the interests of TNK-BP's shareholders.
Buyanov said the raid was carried out on the orders of a Siberian Tyumen region arbitration court that requested TNK-BP's documents, which "determine the professional duties and code of conduct of the holding's board of directors."
The court also demanded documents containing information on the citizenship of the board members and their professional activity, BP's spokesman said.