MOUNTAINAIR, N.M. — A hazmat incident at a rural home in this small New Mexico town left three people dead and sent more than a dozen first responders to the hospital after they were exposed to an unidentified substance, state police said Wednesday.

Torrance County Sheriff's deputies arrived at the residence Wednesday morning and found four people unresponsive inside. Three were pronounced dead at the scene. A fourth victim was airlifted to a hospital in Albuquerque for treatment, according to New Mexico State Police.

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First responders who entered the home soon reported symptoms including nausea and dizziness, prompting a hazmat response. In total, 25 people were exposed to the unknown substance: the four occupants, 18 first responders who have since been discharged, one first responder in the process of being discharged, and three responders who remained hospitalized for further care, NMSP said.

Mountainair EMS Chief Josh Lewis was among those kept overnight for observation, Mayor Peter Nieto confirmed. The town’s emergency services were stretched thin as the incident unfolded, with crews from multiple agencies assisting.

The substance has not been identified, and state police are leading the investigation. Officials have not disclosed what may have been inside the home or how the exposure occurred. The incident comes amid heightened scrutiny of hazmat protocols and emergency response capabilities in rural areas, where resources are often limited.

This is not the first time New Mexico has faced a hazmat crisis. In recent years, the state has dealt with chemical spills and industrial accidents, but a residential exposure of this scale is rare. The incident also echoes broader concerns about first responder safety, particularly in light of the ongoing Ebola outbreak in Congo, where local responders lack adequate protection.

Local officials have not released the names of the deceased pending notification of family. The home remains cordoned off as hazmat teams continue to investigate. The New Mexico Department of Health is assisting with decontamination and monitoring of exposed individuals.

The incident has drawn attention to the risks faced by first responders in rural communities. Mayor Nieto praised the quick response but acknowledged the toll on the town’s emergency services. “Our people are dedicated, but incidents like this test our limits,” he said.

As the investigation continues, state police are urging anyone with information about the substance or the circumstances to come forward. The case highlights the ongoing challenges of hazmat incidents in underserved areas, where a single event can overwhelm local capacity.