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 quarantined.

New Mexico authorities said three people are dead and more than a dozen first responders are being treated for exposure to an unidentified substance after being called to a home…

Stay up to date with notifications from The IndependentNotifications can be managed in browser preferences.AllNewsSportCultureLifestyle(AFP/Getty)Three people died and 18 first…