MEXICO CITY—A gang riot inside a border prison that left two inmates dead quickly spread to the streets of Ciudad Juarez where alleged gang members killed nine more people, including four employees of a radio station, security officials said Friday.
The surge in violence recalled a far more deadly period in Juarez more than a decade earlier. Mexico’s powerful drug cartels commonly use local gangs to defend their territory and carry out their vendettas.
The federal government’s security undersecretary, Ricardo Mejía Berdeja, said the violence started inside the state prison after 1 p.m. Thursday, when member of the Mexicles gang attacked members of the rival Chapos….