CCH Sur campus attack was a school attack that occurred on 22 September 2025 at the Colegio de Ciencias y Humanidades (CCH) Sur campus of the National Autonomous University of Mexico in Mexico City. A 16-year-old student was killed and a 65-year-old janitor was injured in a stabbing attack. The suspect, a 19-year-old irregular student identified as Lex Ashton Canedo López, was arrested after attempting to commit suicide by jumping off an on-campus building.
Attack
On 22 September 2025, a 19-year-old student allegedly entered the campus located in Coyoacán, Mexico City. The perpetrator supposedly approached a 16-year-old classmate and attacked him with a bladed weapon, causing fatal injuries.
A 65-year-old staff member attempted to intervene and was also injured during the attack.
After the assault, the suspect attempted to flee and jumped from a building within the campus, sustaining injuries before being taken into custody.
Aftermath
The attack caused widespread alarm within the National Autonomous University of Mexico community. Classes at the CCH Sur campus were suspended, and several other campuses temporarily shifted to remote learning while security measures were reviewed.
Students and parents organized protests demanding improved campus security and justice for the victim. The incident also sparked national debate about violence in schools and the influence of online extremist communities.
University authorities later introduced additional safety measures, including access controls and surveillance systems.
Suspect
The suspect was identified as Lex Ashton Canedo López, a 19-year-old irregular student.
Hours before carrying out the attack at CCH Sur, the suspect, through a Facebook profile, posted messages and photographs that anticipated the violent acts he was determined to commit.
Legal proceedings
The suspect was hospitalized following injuries sustained during his escape attempt and was later transferred to detention in Mexico City. Prosecutors charged him with homicide, attempted homicide, and causing injury.
Judicial proceedings began in October 2025, with a judge evaluating evidence and determining whether to proceed to trial. As of early 2026, the accused remained in pretrial detention while the case continued through the legal system.[citation needed]
