CNN 's Esprit Smith in Atlanta , Georgia , contributed to this report . Shooting took place at the Balderas station in central Mexico City . Luis Alberto Hernandez Castillo , 17 , had been writing graffiti . When police tried to stop him he drew a gun and started firing . Police heard Hernandez Castillo yelling anti - government slogans .
Shooting took place at the Balderas station in central Mexico City . Luis Alberto Hernandez Castillo , 17 , had been writing graffiti . When police tried to stop him he drew a gun and started firing . Police heard Hernandez Castillo yelling anti - government slogans .