Official sources said the US, which is fighting a battle against ISIS, is keen to know about activities of the terrorist group and Arif could give inputs about the ground situation in the territory the outfit holds on.
Arif has told interrogators that even though he was a civil engineer, he was deployed to work in Mosul dam as a mason following instructions from some ISIS leaders. He was injured while working at the dam following an aerial attack, the sources said.
The US air strikes assisted the Kurdish and Iraqi army.
After his stint at the Mosul dam, Arif had moved to Rakka or ar-Raqqah, a Syrian town located on the north bank of the Euphrates river, which is now under the control of ISIS.
At Rakka, Arif was given an AK-47 rifle but soon he was injured for the second time due to splinter fire.