BELGRADE, Serbia — Serbia's war crimes prosecutor is looking into reports that dozens of Serbs captured by rebels during the war in Kosovo were killed so their organs could be trafficked, the prosecutor's office said Friday. The Serbian prosecutor's office said it received "informal statements" from investigators at the U.N. tribunal in The Hague, Netherlands, that dozens of Serbs imprisoned by Kosovo Albanian rebels were taken to neighboring Albania in 1999 and killed so their organs could be harvested and sold to international traffickers. Bruno Vekaric, the Serbian prosecutor's spokesman, said later on B92 radio that Serbian war crimes investigators...