The attack occurred around 7 a.m. as the two officials sat inside an Audi on a major Mexico City thoroughfare.

At least three vehicles and four people were involved in the killing of the personal secretary and a close adviser of Mexico City’s mayor

Two top aides of Mexico City Mayor Clara Brugada were shot dead after being ambushed by gunmen on a motorbike in a daytime attack in the city center on Tuesday. The victims were the mayor's private secretary,