Sinn Fein leader Gerry Adams has been freed without charges after four days in police custody. Adams, 65, was held for questioning in the 1972 murder of Jean McConville, a widowed mother of 10 who was murdered by the Irish Republican Army. Adams' time in custody has shaken Northern Ireland and the power-sharing government forged between Sinn Fein and the Democratic Unionist Party. Sinn Fein threatened to withdraw support for law and order in Northern Ireland when police announced they were questioning him. In turn, first minister Peter Robinson publicly accused Sinn Fein of a “thuggish attempt to blackmail” police if Adams was not released.