In 2007, PT Ridlatama, whose majority stakeholder was British-based Churchill PLC, conducted a geo-survey eastern Kalimantan for coal. Two months after the survey yielded positive results, East Kutai officials granted mining licenses to Nusantara Energy (a subsidiary of the Nusantara Group, a conglomerate owned by Prabowo's family) to operate in the area surveyed by Ridlatama. In 2010, Ridlatama's license was revoked, effectively completing Nusantara's take over of Churchill's operations. Churchill appealed to the Supreme Court of Indonesia but lost the case. In 2012, Churchill filed a case against the government of Indonesia at the International Center for Settlement of Investment Disputes, demanding $2 billion in compensation. Indonesia argued that ICSID had no authority to arbitrate. In 2014 ICSID ruled that it had the authority and the case is still ongoing.