A US-led coalition airstrike has killed a senior Isis leader in Iraq’s Anbar province, according to the Pentagon.

“On May 6, a coalition airstrike targeted Abu Waheeb, Isil's military emir for Anbar province and a former member of Al-Qaeda in Iraq who has appeared in ISIL execution videos,” Pentagon press secretary Peter Cook said, using an another acronym for Isis.

“It is dangerous to be an Isil leader in Iraq and Syria nowadays.”

There was no independent confirmation of Waheeb’s death, which has been declared killed on previous occasions. The Pentagon also said that three other extremists had been killed in the strike.