"Violence has increased, mortar attacks have increased, roadside bombs have increased," said Mohammed Taqi, a national legislator from the city who recently wrote to Iraq's interim president and prime minister, requesting that Tall Afar's administrative affairs be handled in Baghdad rather than the provincial capital, Mosul. The roads to that city -- as well as two neighborhoods in Tall Afar -- are controlled by insurgents, he said.

To prevent more violence, the streets have been blanketed with troops. Four thousand U.S. troops and 8,000 Iraqi troops as well as about 1,700 police officers are in the city of 200,000 residents, said Col. Sean MacFarland, commander of the 1st Brigade Combat Team, 1st Armored Division.

Although U.S. troops will remain in and around Tall Afar, commanders have moved up the date of the city's transfer this year to the Iraqi army's control.