Overview
- The tanker crash that sent a visible ammonia cloud over the Hermosillo–Guaymas highway Saturday led to an initial full closure and later a single open lane under controlled conditions.
- Local officials now list 27 people who received care, including 25 with mild ammonia exposure and 2 with eye irritation, with 26 taken to hospitals, all reported stable and 10 already discharged.
- IMSS Sonora earlier reported treating 14 people, a lower figure that reflects patients being spread across IMSS, IMSS Bienestar, and ISSSTE facilities as information was updated.
- Firefighters, Civil Protection teams, police, the Navy, the Army, and the Red Cross remain on site to contain risks and guide drivers as specialized heavy gear is used to remove the damaged tanker.
- Ammonia can burn airways and eyes by forming a caustic solution on contact with moisture, which explains the evacuations, medical triage, and strict traffic limits during cleanup.