However , a spokesman for Prime Minister Gulbuddin Hekmatyar , a long-time rival of Masood , expressed concern at signs of renewed U.S. interest in Afghanistan .
<response> However , a spokesman for Prime Minister <person>Gulbuddin Hekmatyar</person> , a long-time rival of <person>Masood</person> , expressed concern at signs of renewed <location>U.S.</location> interest in <location>Afghanistan</location> . </response>