U.S. warplanes carried out air strikes early on Friday morning in the western Libyan city of Sabratha, where Islamic State militants operate, killing as many as 40 people. A U.S. military spokesman said the attacks targeted a senior Tunisian militant linked to attacks in Tunisia last year. Sabratha's mayor, Hussein al-Thwadi, told Reuters the planes struck at 3.30 a.m. (0130 GMT), hitting a building in the Qasr Talil district in which foreign workers were living.