The alleged spokesman for the ISIS terror organization confirmed on Tuesday the killing of the jihadist organisation's second in command in a US air strike earlier this year."America is rejoicing over the killing of Abu Mutaz al-Qurashi and considers this a great victory," Abu Mohamed al-Adnani said in an audio recording posted on websites related with the group.The White House has said that Qurashi, also known as Fadhil Ahmad al-Hayali and Haji Mutaz, was killed on August 18 in a U.S. airstrike on a vehicle near the northern Iraqi city of Mosul.Related: ISIStarget="_blank"'>