Marcelo Pérez continued to work as a peace activist despite threats. Advocates say he did not receive the government protection he needed.

Alejandro Arcos was sworn in last Monday as mayor of Chilpancingo, the capital of Guerrero state, where Acapulco is located.

The 62-year-old scientist turned politician campaigned on a promise to protect an expanded social safety net and fight for the poor like her predecessor, but she faces many pressing problems.

As fentanyl deaths soar, political pressure is growing to stop Mexican cartels that smuggle the drug. Experts on drug trafficking say trying to lock down the Mexican border is an impossible goal.

Mexico's defense secretary said the military had captured Ovidio Guzmán, a son of the notorious former Sinaloa cartel boss Joaquín "El Chapo" Guzmán, on Thursday in a pre-dawn operation in Sinaloa.

The Jalisco New Generation Cartel dominates fentanyl and methamphetamine trafficking and is linked to various assassinations. But President Andrés Manuel López Obrador says, "We will not declare war."