It was unclear whether Lucero López Maza was the intended target of the attack, because shootings have become so common in the area.

A mayoral candidate was among the six people killed by gunfire at a political campaign event in the southern Mexican state of Chiapas on Thursday, according to the Institute of Elections and Citizen Participation (IEPC).

A mayoral candidate and five other people have been killed in a shooting at campaign rally in the violence-wracked southern Mexico state of Chiapas