The officials said today that 65 people were wounded in the attack. Earlier, they had put the death toll from last night’s bombing at 56.
The attack took place at a gas station on a major highway near the city of Hilla. The officials spoke on condition of anonymity because they were not authorized to talk to the media.
IS claimed the attack in a statement, saying it was a suicide truck bomb.
The bombing appears to have targeted a bus with Iranian pilgrims heading home after a major Shiite religious observance in the holy city of Karbala.
PTI