President Barack Obama on Saturday condemned the "brutal murder" of Japanese national Haruna Yukawa by the terrorist organization ISIS and offered his condolences to the Japanese people. "We renew our call for the immediate release of Kenji Goto and all other remaining hostages," the president said in a statement. "We stand shoulder to shoulder with our ally Japan and applaud its commitment to peace and development in a region far from its shores. We will work together to bring the perpetrators of these murders to justice and will continue to take decisive action to degrade and ultimately defeat ISIL."The news came after a video was released on Saturday purportedly claiming that one of two Japanese hostages has been killed and demanded a prisoner exchange for the other. Japanese officials said Saturday they were investigating the new online message and trying to determine its veracity.