Washington: The United States on Monday confirmed the death of the Islamic State's senior leader in Libya, known as Abu Nabil, who was targeted in a November 13 US air strike carried out by F-15 aircraft on a compound in the city of Derna.

Pentagon spokesman Captain Jeff Davis also confirmed that a senior leader of the Al Qaeda-affiliated group al Shabaab was killed in a U.S. military air strike in Somalia carried out on December 2.

The Pentagon named him as Abdirahman Sandhere, also known as "Ukash," and said the strike represented a significant blow to the group.