Córdoba, Argentina—Three people died early Thursday morning due to a carbon monoxide leak in a private residence. The victims were discovered by relatives who went to the home after receiving no response to phone calls. Emergency personnel arrived to find the property filled with odorless, toxic fumes. The source of the leak was traced to a faulty gas heater in the main bedroom.

The victims had been asleep when the gas began to accumulate. The lack of ventilation in the home prevented the fumes from escaping, leading to rapid poisoning. Paramedics confirmed all three were deceased upon arrival. Police have secured the residence while forensic teams conduct a detailed analysis of the gas appliances.

This incident marks another addition to the series of preventable tragedies linked to winter heating systems this season. Civil defense officials in Córdoba have issued repeated warnings about the importance of professional maintenance for all gas-fired units. Many older homes in the city rely on appliances that lack modern safety sensors.

The local prosecutor’s office has opened an investigation into the installation and recent servicing of the heating unit. They are seeking to determine if the equipment had been modified or if it was simply suffering from terminal wear. The family is currently receiving support from city social services.

Neighbors expressed shock at the sudden loss of the three residents. The building has been evacuated as a precautionary measure while utility companies check the pipes and ventilation ducts of adjacent units. Maintenance crews are working to ensure that the gas network within the complex is stable.

The tragedy has prompted a wider city-wide call for safety inspections. Firefighters are encouraging residents to install carbon monoxide detectors in every room that contains a gas appliance. These devices remain relatively rare in residential buildings throughout the region.

The investigation into the specific cause of the appliance failure continues. Forensic technicians are documenting the state of the heater and the ventilation path. For now, the property remains under seal while the inquiry proceeds.