What Happened: On December 20, 2004, armed men took bank employees' families hostage overnight, then forced two Northern Bank workers to help load £26.5 million in cash into a van the next evening — still one of the largest cash heists in UK and Irish history. The PSNI, the British government, and Northern Ireland's Independent Monitoring Commission all publicly attributed the robbery to the Provisional IRA, a claim the organization and Sinn Féin denied. Only peripheral figures were ever convicted of money-laundering charges.