According to the white house, a recent airstrike had killed a ISIS second in command, Fadhil Ahmad al-Hayali, also known as Hajji Mutazz. He was killed in the strike in Mosul, Iraq.
Hajji Mutazz was reported to be involved in the offensive that led ISIS to capture Mosul last summer and also involved in moving large number of weapons, supplies and people between the organization stronghold in Iraq and Syria.
According to National Security Council spokesman Ned Price, Hajji Mutazz is also in-charge of ISIS media, operations, finance and logistics according to White House national security statement.
ISIS media operative, Abu Abdullah is also thought to be dead in the airstrike.
See press release from the White House