In 2008, Moody's Investors Service changed its rating of Bank of Ireland from stable to negative. Moody's pinpointed concerns over weakening asset quality and the impact of a more challenging economic environment on profitability at Bank of Ireland. A share price collapse followed. In 2009, The Irish government announced a €7 billion rescue package for the bank and Allied Irish Banks plc in February. The biggest bank robbery in the history of the state took place at Bank of Ireland at College Green. Consultants Oliver Wyman validated Bank of Ireland's bad debt levels at €6 billion over three years to March 2011, a bad debt level which was exceeded by almost €1 billion within a matter of months.