Investigators say they could have answers within the next 24 hours about a mysterious substance that killed three people ...

Three people died and nearly 20 first responders were quarantined after being exposed to an unidentified substance at a ...

Twenty-three patients who were exposed to an unknown substance were assessed and decontaminated, health officials said.

Investigators in New Mexico are trying to identify a mysterious substance that may have contributed to the deaths of three people and led to more than a dozen first responders being briefly ...

Three individuals died in New Mexico following exposure to an unidentified substance, leading to the quarantine of first ...

First responders answered a call to a suspected drug overdose and more than a dozen ended up quarantined in rural New Mexico.

New Mexico State Police said three of the four people who were found unresponsive inside the home east of Albuquerque died.