Deputy Islamic State leader Ayad al-Jumaili is believed to have been killed in an Iraqi air strike near the Syrian border, according to intelligence reports.

Isil's second-in-command was reported to have been killed with other Islamic State commanders in a strike carried out by the Iraqi air force in the region of al-Qaim, near the border with Syria, on Saturday, a military intelligence source said.

The US-led coalition said it was unable to immediately confirm reports of the death of al-Jumaili, believed to be the deputy of Abu Bakr al-Baghdadi.