BAGHDAD, Iraq (CNN) -- Insurgents wearing military uniforms killed 29 people in an attack early Tuesday on a village near Baquba, while a suicide car bomber struck an army patrol east of Baghdad, killing 11, the Iraqi Interior Ministry said.
Four people also were wounded in the attack on the village, Duwailiya, a Shiite community northeast of Baghdad in Diyala province.
A spokesman for the military command in Diyala province confirmed that the gunmen "were wearing military uniforms but they were in civilian vehicles."
The spokesman said that 10 of the victims were treated so brutally they can't be identified.
The Iraqi command spokesman said the gunmen intended to make villagers think they were soldiers but instead they were "deviated gangs" led by al Qaeda in Iraq.
"Eyewitnesses said that the villagers were surprised when they saw a large number of these terrorists surrounding the village from every entrance, aiming their weapons at the chests of the children, men and women in an act that clearly showed that there is premeditated decision from these Takfiri gangs to cause the most number of casualties among these unarmed civilians," the spokesman said. Takfiri is a reference to Muslim extremists.
The military said it has taken precautions to guard "the remaining families in the region."
The spokesman said soldiers will be traveling at all times in military vehicles. He said armed people dressed as soldiers in civilian vehicles should be treated as terrorists.
U.S. and Iraqi troops have been fighting insurgents in Operation Arrowhead Ripper in and around Baquba, the capital of Diyala -- the eastern province northeast of Baghdad. Other operations are in Anbar province, to the west of Baghdad, and in hotspots south of the capital.
In Tuesday's suicide car bombing east of the capital in Zayyouna, three Iraqi soldiers were among the 11 dead. Fifteen people were injured, including four soldiers.
Also Tuesday, a car bomb exploded in a parking lot near the Iranian Embassy in central Baghdad, killing four people and wounding three others, an Interior Ministry official said. The attack took place in the Jumhoriya bridge area of the capital, the official said.
On the political front, Iraq's Sadrist bloc -- a powerful 30-member Shiite faction -- has ended its boycott of the country's parliament.
The bloc's leader, Nassar Rubaie, said Tuesday that the government had addressed its concerns over the need to pursue the rebuilding of Al-Askariya Mosque, the bombed-out Shiite shrine in Samarra, and to improve security at the shrine and other holy places.
The bloc, which is in the political camp of populist Shiite cleric Muqtada al-Sadr, walked out after the mosque was bombed for a second time in June.
The Askariya shrine also was bombed in February 2006, but there had been no work on rebuilding the structure since then. The first bombing unleashed a no-holds-barred wave of Sunni-Shiite fighting that continues to this day.
The return to the 275-member Council of Representatives comes after many meetings among bloc members, parliament members and government officials, Rubaie said.
"The parliament agreed to a reconstruction timetable, and a new committee will be formed in order to make sure that these demands are met on time," he said.
In other violence, the Interior Ministry said that the bodies of two Iraqi police officers kidnapped over the weekend were found Tuesday in western Baghdad's Mansour district. They were abducted Sunday while guarding a telecommunications firm in Baghdad.
Also in Mansour, gunmen opened fire on civilians who were waiting in line at a gas station, the Interior Ministry said. Three people died and two others were wounded in the attack.
On Monday, one person was killed and two others were wounded in an explosion in eastern Baghdad's Adhamiya district, the U.S. military said Tuesday.