Migrants’ mass graves are not uncommon in Libya. Last year, authorities unearthed the bodies of at least 65 migrants in the Shuayrif region, 350 kilometers (220 miles) south of the capital, Tripoli.

Fighting between rebels and forces loyal to Libyan leader Col Muammar Gaddafi has been continuing in key cities after ... to have hit the town of Sebha in southern Libya, according to residents ...