Islamic State claimed that it shot down an Iraqi army helicopter in northern Iraq, the SITE monitoring group reported early on Thursday.
The helicopter crashed on Wednesday in Salahuddin province north of Baghdad near the Baiji oil refinery, the largest such facility in the country, according to an Iraqi army officer.
The officer confirmed two army personnel died, but said the crash was still under investigation.
Islamic State said on Twitter that it downed the aircraft and published pictures that it claimed were of the debris and the corpse of one of the pilots.
The Islamic State Twitter feed also included a photo of one of their fighters preparing to fire off a shoulder-held rocket or missile that the group said struck the helicopter.
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