ADVERTISEMENT Gunmen have shot dead the mayor of the Mexican municipality of San Mateo Piñas in the southern state of Oaxaca. The killing of Lilia Gema García Soto on Sunday morning is the latest deadly attack on elected officials in Mexico and García Soto is the second mayor to be killed in the state this year. Witnesses told local media that armed men arrived on motorcycles and burst into the city hall, shooting at the mayor and a local official, Eli García Ramírez, who was meeting with her.