An Iraqi volunteer force commander said a mobile phone found on the person of a deceased Daesh militant proves that Turkey’s intelligence agency is providing support for the group.

"The mobile phone was found with one of the killed ISIL leaders in the Northern parts of Salahuddin province two days ago," Jabbar al-Ma'mouri told Soumeriya news on Monday.

He said the phone contains messages from Turkish intelligence proving that Ankara supports Daesh, also known as ISIL/Islamic State, by providing security at the points used by militants traveling from Turkey to Iraq.

"The mobile phone also contains other important information which cannot be disclosed now, and it has been delivered to the specialized security groups for further scrutiny," Ma'mouri said.

Russian Ambassador to France Alexander Orlov in November revealed that Turkey has played an “ambiguous” role in the campaign against Daesh while acting as an accomplice to the terrorist group's activities.

Last month, former US State Department senior advisor David Phillips said Turkey provided material support to Daesh because Ankara shares an ideological connection with the group, along with a mutual enemy in Syrian President Bashar Assad.

"Turkey's role has not been ambiguous – it has overtly supported the ISIL," said Phillips, who currently serves as director of Columbia University's Peace-building and Rights Program. "It has provided logistical support, money, weapons, transport and healthcare to wounded warriors."

Phillips said Turkey has been supporting Daesh to remove Assad from power and because of a "spiritual bond" that exists between Turkey's governing party and the jihadists.