Thousands of supporters of an influential, radical Iraqi Shiite cleric have gathered in central Baghdad to demand that American troops leave the country.

Qatar's foreign minister says his Gulf nation wants to play a mediating role amid regional tensions following a U.S. drone strike.

Iraqi medical and security officials say four anti-government protesters were killed and 108 wounded in the capital Baghdad.

Iraq's Interior Ministry spokesman says 104 people, including 8 security personnel, have been killed during six days of anti-government protests in Baghdad and the country's south.

Iraqi officials say a car bomb exploded outside a popular ice cream shop in Baghdad, killing 10 people and wounding 22.

Iraqi forces started pushing into the city of Fallujah on Monday as a wave of bombings claimed by the Islamic State group in Baghdad and near the Iraqi capital killed at least 24 people.

Iraqi police and hospital officials say two additional bombings in Baghdad have left more than 25 dead and 56 wounded Wednesday, bringing the day's total death toll to 88.

Defense Secretary Ash Carter said Tuesday that an American serviceman has been killed near Irbil in Iraq.

Iraqi security forces have been searching the Baghdad neighborhood where three Americans were reportedly kidnapped over the weekend.