Accountants KPMG, who carried out the review on behalf of the board, expressed concern about the occupation authority's recording of cash receipts and oil export revenue.

BBC: NEWS | Business | US agrees to Halliburton inquiry

Allegations of impropriety in the awarding of contracts in the US, chaos at the occupation authority that ran post-war Iraq and large sums of Iraqi oil money disappearing apparently without any record of how it was spent.

BBC: NEWS | Business | Baghdad's 'missing' billions

"We are not anxious to extend our period of occupation as the occupational authority past June 30th, " he said.

CNN: Bremer: U.N. has 'vital role' to play in Iraq

Larry Diamond, senior fellow at the Hoover Institution at Stanford University was an advisor at the Coalition Provisional Authority early in the occupation and he's argued against keeping so many U.S. troops in Iraq indefinitely.

NPR: Exiting Iraq: Larry Diamond's View

But under international law, occupation begins when territory is actually placed under the authority of an occupying force, according to the Pentagon.

CNN: Coalition to assert authority in Iraq

The move aims to reduce the money the authority spends on putting people up in accommodation known as houses of multiple occupation in the centre of Inverness.

BBC: House keys