Reports emerged on 12 December claiming that an audit on the US' Halliburton, carried out by the US Department of Defence (DoD), has uncovered 'substantial evidence' of overcharging for services supplied to coalition forces in Iraq - a claim that Halliburton refutes. Reports indicate that Halliburton, through its subsidiary Kellogg Brown & Root (KBR), could have overcharged the US government by as much as $61 million for supplying oil in Iraq and a further $67 million on catering facilities. 'The Defence Contracting Audit Agency (DCAA) is conducting a routine audit and has requested additional information from KBR,' said a statement form Halliburton denying the claims. 'There have been no conclusions reached and this is a normal part of the audit process for the DCAA to raise questions and request additional materials.' However, a statement from the DoD said that the audit had uncovered 'some problems that the department is addressing'.