Story highlights White House reaffirms commitment "to bring an end to (ISIS') depravity"

Attack is one of the deadliest claimed by ISIS

(CNN) Promising cheap relief from the scorching Iraqi summer heat, a suicide bomber with an ice truck lured more than 100 people to their deaths Friday.

ISIS claimed responsibility on Twitter for the bombing in Khan Bani Saad, making it one of the single deadliest acts of terror the group has claimed.

The duplicitous plot was carried out on the eve of Eid al-Fitr -- a joyous Muslim holiday marking the end of Ramadan.

Throngs of shoppers crowded the open-air market when, according to two local police officials, a man in a truck pulled up and announced he was not only selling ice, but offering a discount because of the holiday.

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