Tariq bin Tahar-Al-Awni-al-Harzi, one of ISIL's prominent leaders, has been killed by an airstrike from a U.S. drone in Syria. His death comes a day after his brother Ali, another ISIS leader, was killed in a separate drone strike in Mosul, Iraq.

Pentagon spokesman Navy Captain Jeff Davis stated that al-Harzi was killed in the northern city of Shaddadi on June 16 by a U.S. military drone airstrike, according to Arutz Sheva.

"His death will impact ISIL's ability to integrate foreign terrorist fighters into the Syrian and Iraqi fight as well as to move people and equipment across the border between Syria and Iraq," Davis said.

The ISIS leader has played a very active role in the operations of the insurgent group, working in both logistics and field operations.

"As an ISIL member, he worked to raise funds and recruit and facilitate the travel of fighters for the terrorist organization. Al-Harzi also worked to provide materiel to ISIL by procuring and shipping weapons from Libya to Syria for ISIL," Davis said.

Al-Harzi's prominence in the group has been very notable, to the point when in May, the State Department's Rewards for Justice Program offered a $3 million reward for information leading to his death or capture, according to ABC News.

He was also involved in the deadly September 2012 attack on the U.S. consulate in Benghazi, where he was captured and interviewed by the FBI. However, he was released by Tunisian authorities a month after.