Washington: IS miitant group's top finance officer and other senior leaders were likely killed this week in a major offensive targeting the militant group's financial operation, US Defence Secretary Ash Carter said on Friday.
Carter said the United States believes it killed Haji Iman, a senior IS leader in charge of the group's finances as well as some plots and external affairs.
"We are systematically eliminating ISIL's cabinet," Carter told reporters at a briefing at the Pentagon, using an acronym to refer to the group.
Earlier media reports said Haji Iman, who also went by Abd Ar Rahman Mustafa Al Qaduli and other aliases, had been killed in a US air strike in Syria, but Pentagon officials gave few details of the operation.
The operations came as US officials said they were helping Iraqis prepare for a major operation in Mosul to take back territory from the militant group, which aims to establish a caliphate in Iraq and Syria.