Islamic State militants holding two Japanese prisoners

The Islamic State group demanded a US$200 million ransom from the Japanese government Tuesday in exchange for the release of two Japanese hostages.In footage released online, the militant group said it would kill Japanese security contractor Haruna Yukawa and journalist Kenji Goto if its demands aren't met within 72 hours.The footage features the two men kneeling in orange clothing – mirroring previous videos from the militant group.