The body of a Coptic man kidnapped from his home by gunmen on Saturday has been found in the Sheikh Zuweid area of North Sinai. Locals said the man\'s throat had been slit and his hands were tied behind his back. Some eyewitnesses said the kidnappers had placed the Copt\'s severed head beside his body. ? A security official said \"extremist groups\" had captured the man on Saturday, the same day that a Coptic priest was killed.