Five car bombs struck across several neighbourhoods in Baghdad on Monday killing at least 16 people and wounding more than 40 others, security and medical officials said.
Two explosions went off in south Baghdad neighbourhood of Dura, while at least three vehicles rigged with explosives were detonated in Baghdad Jadidah, Hurriyah and Bayaa.
The deadliest attacks struck in Dura, where at least six people were killed, and Baghdad Jadidah, where four were left dead.
The attacks were the latest in a protracted surge in nationwide violence that has left more than 650 people dead so far this month, sparking fears Iraq is slipping back into the all-out conflict that plagued it in 2006 and 2007.
No group immediately claimed responsibility for the attack.
On Saturday evening, a wave of explosions across Baghdad killed 25 people, while 37 more died in a similar spate of attacks on Wednesday.
The countrywide unrest, coupled with a deadly standoff between security forces and anti-government fighters west of Baghdad, comes just months before parliamentary elections.