Iraqi authorities have ordered a 12-hour curfew in Baghdad and three surrounding provinces coinciding with Sunday's expected announcement of a verdict in the trial of former leader Saddam Hussein, Iraqi officials said Saturday. The curfew, to cover both vehicles and pedestrians, will run from 6:00 a.m.(0300 GMT) to 6:00 p.m. (1500 GMT) Sunday, said a close aide to Prime Minister Nouri al-Maliki and an Interior Ministry general. Both spoke on condition of anonymity because they were not authorized to release the information, the Associated Press reported. The curfew will cover Baghdad, Baghdad province, Salahuddin province which includes Saddam's hometown of Tikrit, and the neighboring provinces of Diyala and Anbar that are the hotbed of the Sunni insurgency battling U.S. troops and the Iraqi government. Baghdad was placed under a heavy security clampdown on Saturday, with additional road blocks, stepped up patrols and all leave canceled for Iraqi troops.