At least 27 people have been killed in a series of bombings across Baghdad today, including three which were detonated in just 10 minutes.
The attacks are among the most significant in Baghdad since insurgents led by the Islamic State extremist group captured Iraq's second-largest city Mosul last month at the start of its blitz across Iraq.
Today's deadliest bombing took place in the Shiite neighbourhood of Abu Dashir, where a suicide attacker rammed a car packed with explosives into a checkpoint, killing at least nine people and injuring 19, officials said.
Four policemen were among the dead, a police officer said.
The US State Department said it is increasing security at its embassy in Baghdad and will move some workers out of the Iraqi capital - but said a "substantial majority" of the embassy presence will remain.
"Some additional U.S. government security personnel will be added to the staff in Baghdad; other staff will be temporarily relocated - both to our Consulate Generals in Basra and Arbil and to the Iraq Support Unit in Amman," a State Department statement spokesperson said.
At least 49 people have been killed in a day of bloodshed across Iraq, with 10 car bombs detonated across Baghdad and a suicide bomber attacking soldiers queuing up for their pay in the northern city of Mosul.
The attack on the soldiers claimed 12 lives after a motorist blew himself up outside a bank.
There was no immediate claim of responsibility for any of the coordinated blasts in Baghdad, which occurred in predominantly Shiite Muslim areas of the capital and left 37 people dead.