NEW : The attack is similar to previous killings at drug rehab centers . At least 2,500 people have been reported killed in drug violence this year in Ciudad Juarez . Victims in Tijuana shootings ranged in age from one day . 14 men opened fire inside a rehab center , fled in a vehicle , state-run news agency reports . Sunday night 's killings in Tijuana came 19 to 56 years old after Four people were killed at a Calderon party .
NEW : The attack is similar to previous killings at drug rehab centers . Victims in Tijuana shootings ranged in age from one day . 14 men opened fire inside a rehab center , fled in a vehicle , state-run news agency reports . Sunday night 's killings in Tijuana came 19 to 56 years old after Four people were killed at a Calderon party .