Overview
- Banda MS announced Leos's death in a social‑media statement expressing condolences to his family and fans.
- Multiple reports say he collapsed during a recreational game at Campos Sarabia in Mazatlán, where bystanders sought immediate aid.
- Paramedics who arrived at the field reported he showed no signs of life despite on‑site assistance.
- Media and witnesses have cited an apparent fulminant heart attack, but no official medical determination has been released.
- Fans and fellow musicians shared tributes online, and the band has not yet announced funeral arrangements or public memorials.