Authorities in Mountainair, New Mexico, report that three people die after a suspected overdose at a residence leads to exposure of first responders to an unidentified substance. New Mexico State Police say they respond at about 11:00 a.m. Wednesday to assist the Torrance County Sheriff’s Office with an overdose call involving an unknown substance. During the initial response, multiple first responders are exposed and develop symptoms including nausea and dizziness, according to several outlets. Police and other responders use decontamination procedures and quarantine measures as additional personnel are brought in to help. Nearly two dozen first responders are hospitalized for observation or treatment following the exposure, with some reports putting the figure at about 18 and others describing “nearly 20.” Two people are reported dead at the scene, and a third dies at a hospital. Multiple sources state that authorities say there is no threat to the public, though the exact substance is not initially identified in early reporting. Later reporting cites fentanyl as the suspected substance, though officials’ public statements emphasize that the exposure involves an unknown material during the initial stages of the response.