The Iraqi government has insisted it can maintain security in the country ahead of next week's Arab League summit in Baghdad.
– Ali al-Dabbagh, Iraqi government spokesman
Security efforts will be escalated to counteract terrorist groups' attacks and to fill loopholes used by them to infiltrate security, whether in Baghdad or other provinces."
More than 30 bombs in cities and towns across Iraq have killed at least 52 people and wounded around 250, according to the Reuters news agency.
Car and roadside bombs across Iraq have killed at least 43 people, according to news agency Reuters.
At least 16 explosions have hit various Iraqi cities today, killing 39 and wounding 188, according to news agency Reuters.
Two further explosions have hit Iraq with 39 now killed and 188 wounded, police and hospital sources have told Reuters.
Reports say at least 22 people have been killed in a series of blasts in Iraqi cities on Tuesday, the latest in a spate of violence ahead of next week's Arab League summit in Baghdad.
The deadliest attack was in the southern Shi'ite holy city of Kerbala, where two explosions killed at least nine people and wounded 40, the sources said.
Reuters news agency is reporting that car and roadside bombs have exploded in cities across Iraq, killing at least 10 people and wounding dozens of others.
The deadliest attack was in the northern city of Kirkuk, where a car bomb exploded near a police headquarters, killing seven and wounding 30.