A mass grave containing two dozen unidentified bodies was discovered in the coastal city of Sirte, once controlled by the Islamic State (IS) group, a Libyan government agency said Monday. The National Authority for Searching and Identifying Missing People said its team recovered 17 of the 24 bodies found under destroyed buildings in the neighborhood of Al-Kambo in Sirte, about 450 kilometers (300 miles) east of the capital, Tripoli. No details were provided about the potential date when the mass grave was created. However, Sirte city was a stronghold for IS for several years until the militant…