A suicide bomber dressed as a policeman blew himself up Saturday during a morning roll call at the heavily guarded Baghdad headquarters of a feared commando unit, killing at least three people, officials said. Eyewitnesses reported at least five died.
Another suicide car bomber later blew himself up in front of the Slovakian Embassy in southeast Baghdad, injuring four people.
Attacks by suicide bombers and gunmen in Baghdad and south of the capital left at least 23 dead.
Just south of Baghdad, gunmen killed at least 11 Iraqi construction workers and injured another three when they riddled their minibus with bullets as it drove in the so-called Triangle of Death, police said. The attack occurred in Diyara, 30 miles south of Baghdad, and the men worked on construction projects on Iraq and American bases, police added.
In other recent developments:Two U.S. Marines were killed Friday in a roadside bomb attack near the volatile Anbar province town of Saqlawiyah, west of Fallujah, the military said Saturday. At least 1,693 U.S. military members have died since the Iraq war began in March 2003, according to an Associated Press count.A bomb exploded in a cemetery in the southern city of Najaf early Saturday, killing two Iraqis, including and 8-year-old girl and wounding three others from the same family as they were visiting the graves of relatives, said Capt. Hadi al-Najim. Al-Najim said the bomb had been planted in the cemetery during August clashes between U.S. forces and supporters of radical Shiite cleric Muqtada al-Sadr.U.S. soldiers shot dead two Iraqis and wounded two others in Baghdad on Saturday when their car came too close to an American armored patrol, military spokesman Lt. Jamie Davis said. Iraqi police Maj. Moussa Abdul-Karim said the victims were Iraqi security guards driving to work in northern Baghdad's Shula neighborhood at about 6:30 a.m. and mistakenly shot by American soldiers. He did not say which company they worked for. Davis said the Iraqis were driving too slowly in front of a lead vehicle in an American convoy. An American soldier in the lead vehicle fired a warning shot to make the Iraqi vehicle move away, but its occupants returned fire on the convoy and sparked a gun battle, Davis said. "The (U.S.) patrol returned fire, killing two occupants, wounding two more and setting their car on fire," Davis said, adding the American soldiers left the scene without stopping. Another American patrol returned shortly after and found "multiple AK-47s" inside the vehicle and took the wounded men to a hospital, Davis added.
In Baghdad, gunmen also attacked in a speeding car attacked another Interior Ministry commando convoy in western Baghdad's Mansour area, killing three commandos, police said.
The attack at the two-story headquarters of the Wolf Brigade follows weeks of accusations against the Shiite Muslim-dominated force by Sunni Arab leaders, who accuse it of kidnapping and killing Sunnis, including clerics.
Interior Minister Bayan Jabr said the attacker was a former Wolf Brigade member who was targeting the commando force's commander, Brig. Mohammed al-Quraishi.
"Today's attack does not constitute an infiltration of the police forces," Jabr said during a press conference. "The only thing left of the bomber was his head and feet."
Jabr said three people were killed in the blast. But a witness to the attack, Maj. Falah al-Mahamdawi, said five people were killed and seven wounded. It was not immediately possible to reconcile the discrepancy. Police are hunting for two of his former colleagues, the minister added.
It was unclear how the attacker managed to enter the tightly guarded compound in eastern Baghdad's Bab Sharqi neighborhood with his explosives being undetected. But by being dressed in police uniform, the attacker may have managed to avoid the stringent checks in place.
People entering the compound, which also houses the 10-story Interior Ministry building, must go through metal detectors and be frisked by policemen and checked by sniffer dogs before arriving at the building.
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