The 2011 Samarra bombing was an attack that took place in the city of Samarra on 12 February 2011.
A suicide bomber detonated an explosives vest in a bus depot at the entry to the city as Shia pilgrims gathered to commemorate the death of one of their 12 revered imams.
The attacker infiltrated the crowd at a security checkpoint before detonating his explosives, killing 48 and injuring 80.
Iraqi officials alleged that the Islamic State of Iraq organization carried out the attacks.
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