On September 11th, Mexican President Claudia Sheinbaum lamented and condemned the assassination of U.S. conservative activist Charlie Kirk on the day previous.

President Sheinbaum made the comments near the beginning of her morning press conference. They were planned comments, and not in response to a question.
(Text here, video here).
President Sheinbaum stated that she’d wanted to comment on two topics.
The first was to lament the explosion of a gas tanker explosion which killed 8 and injured at least 90 in the Iztapalapa borough of Mexico City, also the day previous.
Then President Sheinbaum said that “The second [topic], also to lament the occurrence in the United States yesterday with this activist, this activist person, Charlie Kirk. We are also totally against any violence, and particularly political violence. Therefore, also our condemnation to actions of this type.”

Source:Mexican Presidential Website
Previous Mexican President AMLO also condemned last years’ two attempts on the life of Donald Trump, see here and here.