The US military said on Thursday a coalition air strike killed the finance chief in the Takfiri group, ISIL, in Iraq last month.

The US military said on Thursday a coalition air strike killed the finance chief in the Takfiri group, ISIL (so-called Islamic State in Iraq and Levant), in Iraq last month.

Abu Saleh was killed in late November, US military spokesman Colonel Steve Warren said in a videoconference from Baghdad, calling him "one of the most senior and experienced members" of the group's nefarious financial system.

"Abu Saleh was the third member of the finance network that we have killed" recently, Warren added, likening him to a finance minister for the Takfiri group.

He was killed along with two associates as part of the US-led coalition's campaign to destroy the  financial infrastructure of ISIL, Brett McGurk, Washington's envoy for the anti-ISIL fight, said on Twitter.

Real name Muwaffaq Mustafa Muhammad al-Karmush, the US State Department's terrorist blacklist describes him as a 42-year-old Iraqi.

"Killing him and his predecessors exhausts the knowledge and talent needed to coordinate funding within the organization," Warren said, adding that two other henchmen in ISIL fundraising networks also were killed in coalition air strikes in Iraq in late November.

They were identified as Abu Mariam, an enforcer and senior leader in ISIL group extortion networks, and Abu Waqman al-Tunis, who Warren said coordinated ISIL's transfer of people, weapons and information.

Abu Mariam appears on the State Department terrorist list as Mounir Ben Dhaou Ben Brahim Ben Helal, a 32-year-old Tunisian.

"These strikes are an example of how we are able to decimate networks," Warren said.