More than 30 people were also wounded in the attack, police say. PHOTO: AFP/FILE
The attack took place at gas station with an adjacent restaurant used by Iranian pilgrims to rest on their way back from the Arbaeen pilgrimage in the Shia holy city of Kerbala.
IS group holding civilians in Iraq's Mosul
No side has claimed responsibility for the attack, but the ultra-hardline Islamic State group has mounted similar attacks in areas outside their control in an attempt to undermine the military campaign in Mosul, the group's last remaining city in Iraq.
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