MILITARY

US bombers strike Islamic State camps in Libya

Secretary of Defense Ash Carter is interviewed in his Pentagon office, Wednesday, Jan. 18, 2017. Sending thousands more American troops into Iraq or Syria in a bid to accelerate the defeat of the Islamic State group would push U.S. allies to the exits, create more anti-U.S. resistance and give up the U.S. military’s key advantages, Carter said in an Associated Press interview.(AP Photo/Cliff Owen)

Secretary of Defense Ash Carter is interviewed in his Pentagon office, Wednesday, Jan. 18, 2017. Sending thousands more American troops into Iraq or Syria in a bid to accelerate the defeat of the Islamic State group would push U.S. allies to the exits, create more anti-U.S. resistance and give up the U.S. military‚Äôs key advantages, Carter said in an Associated Press interview.(AP Photo/Cliff Owen)  (The Associated Press)

A U.S. defense official says Air Force B-2 bombers attacked Islamic State military camps in Libya.

The official said the camps were located about 45 kilometers, or 28 miles, southwest of the city of Sirte (sert). The official was not authorized to speak in advance of an expected Pentagon announcement and confirmed the strikes on condition of anonymity.

The strikes were carried out overnight and were authorized by President Barack Obama. The official said they were aimed at hitting Islamic State militants who had escaped from Sirte after U.S. strikes largely eliminated the group's presence in that coastal city in December.