Mexican local mayor went alone to meeting before his brutal killing

The mayor of Chilpancingo, the capital of Mexico's violence-plagued state of Guerrero, traveled alone to an out-of-town meeting before he was killed, Mexico's security minister said on Tuesday about a murder which has shocked the country. Arcos, of Mexico's main opposition alliance, had only taken office six days earlier. Photos circulated on Sunday via WhatsApp and in Mexican media outlets depicting a severed head on top of a pick-up truck, appearing to be that of Arcos.