The blasts - at least 13 separate attacks - came just two days after gunmen in Baghdad held a Christian congregation hostage in a siege that ended with 58 people dead. Tuesday morning, hundreds of Christians gathered at a downtown church to mourn their lost brethren.
"They murdered us today and on Sunday, they killed our brother, the Christians," said Hussein al-Saiedi, a 26-year-old resident of the Shiite slum of Sadr City where 21 people were killed in the most deadly incident of the day. He said he was talking to friends on a busy street, when the blast occurred.
"We were just standing on the street when we heard a loud noise, and then saw smoke and pieces of cars, falling from the sky," he said. People were fleeing the site in panic, frantically calling the names of their relatives and friends. "They (the government) say the situation is under control. Where is their control?"
There was no immediate claim of responsibility. But the coordination of the blasts, the complexity of the operation and the predominantly Shiite targets point to al-Qaida-linked Sunni insurgents. Iraq has been plagued by conflict between Shiite and Sunni Muslim sects since the 2003 collapse of Saddam Hussein's regime, which was dominated by the minority Sunnis. It was supplanted by a Shiite-dominated government that remains in power until today.
The bombings began at about 6:15 p.m. The assailants used booby-trapped cars, roadside bombs, mortars and at least one suicide bomber on a motorcycle. Though most of the neighborhoods hit were Shiite-dominated, a couple struck Sunni neighborhoods as well.
The attacks stretched from one side of Baghdad to the other and were spread out over hours, indicating a high degree of coordination and complexity from an insurgency that just a few months ago U.S. and Iraqi officials were saying was all but defeated.
The casualty information all came from police and hospital officials who spoke on condition of anonymity because they were not authorized to speak to the media.
Earlier Tuesday, hundreds of grieving Christians and other Iraqis packed a funeral service for members of the faith killed in the militant siege on a Baghdad church. The attack, which an al-Qaida-linked group claimed it carried out, left 58 people dead and dozens wounded.
The complex attack carried out Sunday evening on parishioners celebrating Mass at the Our Lady of Salvation church in an affluent Baghdad neighborhood emphasized the ease with which militants can still strike in Iraq and the particularly dangerous position that the country's Christians occupy among Iraq's sectarian structure.
Iraq's top Catholic prelate, Chaldean Cardinal Emmanuel III Delly, urged the government to protect the nation's Christian community and not let their promises just be ink on paper.
"We are gathered here in this sacred house to say farewell to our brothers who were just the day before yesterday exclaiming love and peace," Delly told a weeping congregation at the Chaldean St. Joseph Church in central Baghdad.
In a show of force, Iraqi security forces flooded the streets around the church where black-clad parishioners mourned for the dead parishioners.
But as the security forces concentrated their efforts in the central Karradah neighborhood where the funeral took place, militants appeared to have spread out in a ring across the capital where the evening attacks took place just hours later.
The immediate reaction from many Iraqis was frustration with the attacks that continue despite assurances that the city and country are safe.
"Where is the government?" said Adnan Anbar, a 42-year-old man from Sadr City who was crossing the street when the blast went off. "What are all these checkpoints about," he said, referring to the hundreds of police and army checkpoints scattered all over Baghdad.
Associated Press writers Lara Jakes and Mazin Yahya contributed to this report.