A hazardous ammonia leak at a company building in Stabio, Ticino, triggered a large-scale emergency response on Thursday evening. The incident led to the evacuation of approximately 100 people from the affected business and surrounding buildings.
Emergency Response and Public Safety
The leak occurred shortly after 9 p.m., prompting the immediate activation of an emergency plan. Five individuals were transported to the hospital for medical examinations, according to the Ticino police.
A coordinated effort involving the cantonal police, Mendrisio municipal police, emergency services, specialists, and the fire department was required to bring the leak under control. During the operation, Via Laveggio was temporarily closed to traffic.
Investigation into the Cause
Initial reports indicate that the leak was caused by a broken pipe. The exact reason for the pipe’s failure is currently the subject of an ongoing investigation.
Potential Next Steps
Authorities may focus their upcoming efforts on the technical analysis of the ruptured piping. Depending on the investigation’s findings, the company could be required to review its infrastructure maintenance protocols to prevent similar occurrences.
Frequently Asked Questions
How many people were evacuated during the incident?
Around 100 people were evacuated from the company building and neighboring properties.

What caused the ammonia leak in Stabio?
The leak was caused by a broken pipe, though the exact cause of the rupture is still under investigation.
Were there any injuries reported?
Five people had to be taken to the hospital for a medical check-up.
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