Us airstrikes in libya
US air strike in Libya kills member of al-Qaeda affiliate: military
The attack was the second against al-Qaeda in the Islamic Maghreb in recent months.
A US official, speaking on condition of anonymity, said the strikes were carried out by armed drones.
Islamic State took over Sirte in early 2015, turning it into its most important base outside the Middle East and attracting large numbers of foreign fighters to the city.