Authorities had increased security in hopes of preventing attacks during the four-day Eid al-Adha celebrations, when people are off work.
The deadliest attacks happened in the evening in the Shiite neighbourhood of Sadr City in Baghdad.
Iraqi militants unleashed a string of bombings and other attacks primarily targeting the country's Shi'ite community, leaving at least 40 dead.
Authorities had increased security in hopes of preventing attacks during the four-day Eid al-Adha celebrations, when people are off work.
The deadliest attacks happened in the evening in the Shiite neighbourhood of Sadr City in Baghdad.
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