Nicaraguan diplomat César Antonio Mercado Pavón (center) was found with his throat slashed. A top Central American diplomat was found dead with his throat slashed in the Bronx Thursday when his driver came to take him to the United Nations, police said. Nicaraguan Consul César Antonio Mercado Pavón, 34, died in his apartment on the Grand Concourse near E. 180th St. A neighbor heard loud noises...