MIRANSHAH: Suspected tribal militants in North Waziristan have beheaded a man they accused of acting as a "US spy", officials said on Monday. The headless body of the local man was found at Madikhel village, 35 kilometres south of Miranshah, administration officials told Daily Times. A letter found near the body claimed that the man had been executed because he had spied for the United States. The killing represents the first such incident since June 25, when local militants announced a unilateral ceasefire to facilitate the Grand Jirga's "peace mission" to the area.